APA aipamena

Hapgood, C. H. (1970). The path of the pole (2nd ed.). Chilton.

Chicago Style aipamena

Hapgood, Charles H. The Path of the Pole. 2nd ed. Philadelphia: Chilton, 1970.

MLA aipamena

Hapgood, Charles H. The Path of the Pole. 2nd ed. Chilton, 1970.