APA (7th ed.) Citation

Bennett, G. (1990). Time & frequency bulletin No. 389. U.S. Dept. of Commerce, National Institute of Standards and Technology.

Chicago Style (17th ed.) Citation

Bennett, Gwen. Time & Frequency Bulletin No. 389. Gaithersburg, MD: U.S. Dept. of Commerce, National Institute of Standards and Technology, 1990.

MLA (9th ed.) Citation

Bennett, Gwen. Time & Frequency Bulletin No. 389. U.S. Dept. of Commerce, National Institute of Standards and Technology, 1990.