APA (7th ed.) Citation

Pannekoek, A. (1961). A History of astronomy. George Allen & Unwin.

Chicago Style (17th ed.) Citation

Pannekoek, A. A History of Astronomy. London: George Allen & Unwin, 1961.

MLA (9th ed.) Citation

Pannekoek, A. A History of Astronomy. George Allen & Unwin, 1961.

Warning: These citations may not always be 100% accurate.