APA (7th ed.) Citation

Christiansen, E. (1980). The northern crusades: The Baltic and the catholic frontier 1100 - 1525 (1. publ.). Mamillan Press.

Chicago Style (17th ed.) Citation

Christiansen, Eric. The Northern Crusades: The Baltic and the Catholic Frontier 1100 - 1525. 1. publ. London [u.a.]: Mamillan Press, 1980.

MLA (8th ed.) Citation

Christiansen, Eric. The Northern Crusades: The Baltic and the Catholic Frontier 1100 - 1525. 1. publ. Mamillan Press, 1980.