APA Edition Citation

Krupp E. C. (1954). In search of ancient astronomies (2nd ed.). Penguin books.

Chicago Edition Citation

Krupp E. C. In Search of Ancient Astronomies. 2nd ed. Harmondsworth: Penguin books, 1954.

MLA Edition Citation

Krupp E. C. In Search of Ancient Astronomies. 2nd ed. Penguin books, 1954.

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