APA (7 ম সংস্করণ) উদ্ধৃতি

Ravenal, E. C. (1978). Never again: Learning from America's foreign policy failures. Temple University Press.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Ravenal, Earl C. Never Again: Learning from America's Foreign Policy Failures. Philadelphia: Temple University Press, 1978.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Ravenal, Earl C. Never Again: Learning from America's Foreign Policy Failures. Temple University Press, 1978.