APA (7 ম সংস্করণ) উদ্ধৃতি

Bertke, S. (1941). The possibility of invincible ignorance of the natural law. Catholic University of America Press.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Bertke, Stanley. The Possibility of Invincible Ignorance of the Natural Law. Washington, D.C.: Catholic University of America Press, 1941.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Bertke, Stanley. The Possibility of Invincible Ignorance of the Natural Law. Catholic University of America Press, 1941.