APA (7 ম সংস্করণ) উদ্ধৃতি

Bock, E. C. (1977). Wilhelm von Ketteler, Bishop of Mainz: His life, times and ideas. University Press of America.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Bock, Edward C. Wilhelm Von Ketteler, Bishop of Mainz: His Life, Times and Ideas. Washington, D.C.: University Press of America, 1977.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Bock, Edward C. Wilhelm Von Ketteler, Bishop of Mainz: His Life, Times and Ideas. University Press of America, 1977.