Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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