APA-referens (7:e uppl.)

Astrua, D. M. (1973). Illustrated story of Lourdes. Catholic Pub. Co..

Chicago-referens (17:e uppl.)

Astrua, Don Massimo. Illustrated Story of Lourdes. London: Catholic Pub. Co., 1973.

MLA-referens (8:e uppl.)

Astrua, Don Massimo. Illustrated Story of Lourdes. Catholic Pub. Co., 1973.