APA-referens (7:e uppl.)

Husslein, J. (1930). Our guardian angels. Paulist Press.

Chicago-referens (17:e uppl.)

Husslein, Joseph. Our Guardian Angels. New York: Paulist Press, 1930.

MLA-referens (8:e uppl.)

Husslein, Joseph. Our Guardian Angels. Paulist Press, 1930.