APA (7e ed.) Bronvermelding

Wolferstan, B., & Longhaye, G. (1928). An eight days' retreat. P.J. Kenedy.

Chicago (17e ed.) Bronvermelding

Wolferstan, Bertram, en G. Longhaye. An Eight Days' Retreat. New York: P.J. Kenedy, 1928.

MLA (8e ed.) Bronvermelding

Wolferstan, Bertram, en G. Longhaye. An Eight Days' Retreat. P.J. Kenedy, 1928.