Παραπομπή σε μορφή APA (7η εκδ.)

Earle, K. W. (1936). The geological map: An elementary text book for students of geography and geology. Methuen.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Earle, Kenneth W. The Geological Map: An Elementary Text Book for Students of Geography and Geology. London: Methuen, 1936.

Παραπομπή σε μορφή MLA (8th εκδ.)

Earle, Kenneth W. The Geological Map: An Elementary Text Book for Students of Geography and Geology. Methuen, 1936.