APA (7th ed.) Citation

Perrett, B., & Smith, D. E. (1980). The Panzerkampfwagen IV. Osprey.

Chicago Style (17th ed.) Citation

Perrett, Bryan, and David E. Smith. The Panzerkampfwagen IV. London: Osprey, 1980.

MLA (9th ed.) Citation

Perrett, Bryan, and David E. Smith. The Panzerkampfwagen IV. Osprey, 1980.