APA (7th ed.) Citation

Donn, B. (1976). The Study of comets: The proceedings of IAU Colloquim no. 25, co-sponsored by COSPAR, and held at Goddard Space Flight Center, Greenbelt/Md., Oct. 28 Nov. 1. 1974.

Chicago Style (17th ed.) Citation

Donn, Bertram. The Study of Comets: The Proceedings of IAU Colloquim No. 25, Co-sponsored by COSPAR, and Held at Goddard Space Flight Center, Greenbelt/Md., Oct. 28 Nov. 1. 1974. Washington/D.C, 1976.

MLA (9th ed.) Citation

Donn, Bertram. The Study of Comets: The Proceedings of IAU Colloquim No. 25, Co-sponsored by COSPAR, and Held at Goddard Space Flight Center, Greenbelt/Md., Oct. 28 Nov. 1. 1974. 1976.