APA (7th ed.) Citation

Kamas, G., & Lombardi, M. A. (1990). Time and frequency users manual (Rev. 1990.). U.S. Dept. of Commerce, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O..

Chicago Style (17th ed.) Citation

Kamas, George, and Michael A. Lombardi. Time and Frequency Users Manual. Rev. 1990. Gaithersburg, MD : Washington, D.C.: U.S. Dept. of Commerce, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O., 1990.

MLA (8th ed.) Citation

Kamas, George, and Michael A. Lombardi. Time and Frequency Users Manual. Rev. 1990. U.S. Dept. of Commerce, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O., 1990.