APA aipamena

United States. National Science Foundation. National Science Board. (1973). Science indicators 1972. for sale by the Supt. of Docs., U.S. Govt. Print Off.

Chicago Style aipamena

United States. National Science Foundation. National Science Board. Science Indicators 1972. Washington D.C: for sale by the Supt. of Docs., U.S. Govt. Print Off, 1973.

MLA aipamena

United States. National Science Foundation. National Science Board. Science Indicators 1972. for sale by the Supt. of Docs., U.S. Govt. Print Off, 1973.