APA (7th ed.) Citation

Gingerich, O. (1975). Astronomy three hundred years ago.

Chicago Style (17th ed.) Citation

Gingerich, Owen. Astronomy Three Hundred Years Ago. 1975.

MLA (9th ed.) Citation

Gingerich, Owen. Astronomy Three Hundred Years Ago. 1975.

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