APA (7th ed.) Citation

Pannekoek, A. (1961). A history of astronomy. Intersicnece Publishers.

Chicago Style (17th ed.) Citation

Pannekoek, Anton. A History of Astronomy. New York: Intersicnece Publishers, 1961.

MLA (8th ed.) Citation

Pannekoek, Anton. A History of Astronomy. Intersicnece Publishers, 1961.