APA (7 ম সংস্করণ) উদ্ধৃতি

(1940). Key of heaven: A manual of prayers and instructions for Catholics, in accordance with recent pontifical decrees. Catholic Book Pub. Co..

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Key of Heaven: A Manual of Prayers and Instructions for Catholics, in Accordance with Recent Pontifical Decrees. New York: Catholic Book Pub. Co., 1940.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Key of Heaven: A Manual of Prayers and Instructions for Catholics, in Accordance with Recent Pontifical Decrees. Catholic Book Pub. Co., 1940.