APA (7 ম সংস্করণ) উদ্ধৃতি

Niehaus, F. J. (2001). Karl's diary: Blessed Karl Leisner: in his own words. Schoenstatt Fathers.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Niehaus, Fr Jonathan. Karl's Diary: Blessed Karl Leisner: In His Own Words. Waukesha, WI: Schoenstatt Fathers, 2001.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Niehaus, Fr Jonathan. Karl's Diary: Blessed Karl Leisner: In His Own Words. Schoenstatt Fathers, 2001.