Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Heidel, W. A. (1937). The frame of the ancient Greek maps with a discussion of the discovery of the sphericity of the earth. American geographical society.

Chicago Citation Edition Citation

Heidel, William Arthur. The Frame of the Ancient Greek Maps with a Discussion of the Discovery of the Sphericity of the Earth. New York: American geographical society, 1937.

MLA Citation Edition Citation

Heidel, William Arthur. The Frame of the Ancient Greek Maps with a Discussion of the Discovery of the Sphericity of the Earth. American geographical society, 1937.