APA (7th ed.) Citation

National Referral Center (U.S.). (1981). A Directory of information resources in the United States: Geosciences and oceanography. Library of Congress : For sale by the Supt. of Docs., U.S. G.P.O..

Chicago Style (17th ed.) Citation

National Referral Center (U.S.). A Directory of Information Resources in the United States: Geosciences and Oceanography. Washington, D.C.: Library of Congress : For sale by the Supt. of Docs., U.S. G.P.O., 1981.

MLA (8th ed.) Citation

National Referral Center (U.S.). A Directory of Information Resources in the United States: Geosciences and Oceanography. Library of Congress : For sale by the Supt. of Docs., U.S. G.P.O., 1981.