For referencing in Wikipedia, see Citing sources.

In general, a reference is something that refers to or designates something else, or acts as a connection or a link between two things. The objects it links may be concrete, such as books or locations, or abstract, such as data, thoughts, or memories. The object which is named by a reference, or to which the reference points, is the referent.

The term reference is used with different specialized meanings in a variety of fields, as follows:

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Library of Congress: What's New in Science Reference

Updated Science Reference Guide: Winter Gardening
A guide of selected titles, journal articles, Internet resources, and online sources for seed and plant catalog information related to winter gardening.
New Web cast: Hubble - A New Beginning
Dave Leckrone, just-retired senior project scientist for the Hubble Space Telescope Program speaks about Hubble's final mission.
Blogging from Inside Adams: Science, Technology, and Business
The Science, Technology, and Business Division of the Library of Congress has launched a new blog, Inside Adams. Inside Adams will point readers to the Library's large and diverse collections of books, journals, prints, photographs, digital collections, finding aids, and Webcasts related to science, technology, and business. This blog will give us the opportunity to highlight the bibliographies, research guides, and special pages that have been developed by staff, as well as share the history, art, and architecture of the John Adams Building. We hope you will join and participate along with us.
New Web cast: Peering into the Storm-NASA's Exploration of Hurricanes
Dr. Braun, a research meteorologist with Goddard Space Flight Center, provides an overview of questions that motivate NASA's research on hurricanes and describes how NASA addresses these questions with the use of satellites, aircraft field campaigns, computer modeling, and other instrumentation that are used to interpret hurricanes.
Upcoming Lecture: On Thin Ice-The Changing Ice Cover on Polar Oceans,
NASA scientist Thorsten Markus has closely observed the changes in the polar sea-ice cover, sometimes doing field work directly on the ice or from a NASA airplane and other times via satellite remote sensing. He will be sharing his expertise on polar ice in a lecture at the Library of Congress on Nov. 17 at 11:30 a.m. in the Mary Pickford Theater on the third floor of the James Madison Building, 101 Independence Ave. S.E., Washington, D.C. Free and Open to the Public Press contact: Donna Urschel (202) 707-1639 Public contact: Science, Technology and Business Division (202) 707-5664; NASA Goddard Space Flight Center (301) 614-6627
Upcoming lecture Oct. 13: The Hubble Space Telescope. A New Beginning,
For more than 19 years, NASA’s Hubble Space Telescope-one of the celebrated scientific instruments of our time-has revolutionized our understanding of the universe and how it works. David S. Leckrone, just-retired senior project scientist for the Hubble Space Telescope Program, will present "The Hubble Space Telescope: A New Beginning" at the Library of Congress at 1 p.m. on Tuesday, Oct. 13, in the Mary Pickford Theater on the third floor of the James Madison Building, 101 Independence Ave. S.E., Washington, D.C.

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