APA ציטוט

Bernal, J. D. (1969). Science in history. Australia: Penguin books.

Trích dẫn kiểu Chicago

Bernal, J. D. Science in History. Australia: Penguin books, 1969.

ציטוט MLA

Bernal, J. D. Science in History. Australia: Penguin books, 1969.