APA (7 ম সংস্করণ) উদ্ধৃতি

Langley, R. (1991). Signs of the time... Apparitions, visions, locutions conderning the last times. Marian Center.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Langley, Richard. Signs of the Time... Apparitions, Visions, Locutions Conderning the Last Times. Waterloo, IA: Marian Center, 1991.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Langley, Richard. Signs of the Time... Apparitions, Visions, Locutions Conderning the Last Times. Marian Center, 1991.