APA (7th ed.) Citation

Hawkins, G. S., & Southworth, R. B. (1961). Orbital elements meteors. Smithsonian Institution.

Chicago Style (17th ed.) Citation

Hawkins, Gerald S., and Richard B. Southworth. Orbital Elements Meteors. Washington, D.C: Smithsonian Institution, 1961.

MLA (9th ed.) Citation

Hawkins, Gerald S., and Richard B. Southworth. Orbital Elements Meteors. Smithsonian Institution, 1961.