APA (7th ed.) Citation

Cook, A. F., & Hawkins, G. S. (1960). The meteoric head echo. Smithsonian Institution.

Chicago Style (17th ed.) Citation

Cook, Allan Fairchild, and Gerald S. Hawkins. The Meteoric Head Echo. Washington, D.C.: Smithsonian Institution, 1960.

MLA (9th ed.) Citation

Cook, Allan Fairchild, and Gerald S. Hawkins. The Meteoric Head Echo. Smithsonian Institution, 1960.