APA (7th ed.) Citation

Hawkins, G. S., & Southworth, R. B. (1958). The regression of the node of the Quadrantids. Smithsonian Institution.

Chicago Style (17th ed.) Citation

Hawkins, Gerald S., and Richard B. Southworth. The Regression of the Node of the Quadrantids. Washington, D.C.: Smithsonian Institution, 1958.

MLA (9th ed.) Citation

Hawkins, Gerald S., and Richard B. Southworth. The Regression of the Node of the Quadrantids. Smithsonian Institution, 1958.