Cita APA (7a ed.)

Kamas, G., & Lombardi, M. A. (1990). Time and frequency users manual. Departamente of Commerce.

Cita Chicago Style (17a ed.)

Kamas, George, y Michael A. Lombardi. Time and Frequency Users Manual. Washington: Departamente of Commerce, 1990.

Cita MLA (8a ed.)

Kamas, George, y Michael A. Lombardi. Time and Frequency Users Manual. Departamente of Commerce, 1990.