APA (7 ম সংস্করণ) উদ্ধৃতি

Zellmer, D. (1999). The spectator: A World War II bomber pilot's journal of the artist as warrior. Praeger.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Zellmer, David. The Spectator: A World War II Bomber Pilot's Journal of the Artist as Warrior. Westport, Conn.: Praeger, 1999.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Zellmer, David. The Spectator: A World War II Bomber Pilot's Journal of the Artist as Warrior. Praeger, 1999.