Παραπομπή APA

Garland, G. D. (1965). Earth's shape and gravity. Pergamon press.

Παραπομπή Chicago Style

Garland, G. D. Earth's Shape and Gravity. New york: Pergamon press, 1965.

Παραπομπή MLA

Garland, G. D. Earth's Shape and Gravity. Pergamon press, 1965.