Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (8e éd.)

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