APA (7th ed.) Citation

Mattern, J. (1942). Geopolitik: Doctrine of national self-sufficiency and empire. The Johns Hopkins Press.

Chicago Style (17th ed.) Citation

Mattern, Johannes. Geopolitik: Doctrine of National Self-sufficiency and Empire. Baltimore: The Johns Hopkins Press, 1942.

MLA (9th ed.) Citation

Mattern, Johannes. Geopolitik: Doctrine of National Self-sufficiency and Empire. The Johns Hopkins Press, 1942.