APA (7th ed.) Citation

Brzezinski, R., & Hook, R. (1991). The army of Gustavus Adolphus 1 infantry. Osprey.

Chicago Style (17th ed.) Citation

Brzezinski, Richard, and Richard Hook. The Army of Gustavus Adolphus 1 Infantry. London: Osprey, 1991.

MLA (9th ed.) Citation

Brzezinski, Richard, and Richard Hook. The Army of Gustavus Adolphus 1 Infantry. Osprey, 1991.