APA (7e ed.) Bronvermelding

Habig, M. A. (1959). Heart o' the Rule: A primer for tertiary novices (Rev. ed.). Franciscan Herald Press.

Chicago (17e ed.) Bronvermelding

Habig, Marion Alphonse. Heart O' the Rule: A Primer for Tertiary Novices. Rev. ed. Chicago: Franciscan Herald Press, 1959.

MLA (8e ed.) Bronvermelding

Habig, Marion Alphonse. Heart O' the Rule: A Primer for Tertiary Novices. Rev. ed. Franciscan Herald Press, 1959.