APA-viite (7. p.)

Wolf, P., & Gründing, M. (2019). A picture goes around the world: 1915-2015, Schoenstatt's Marian image. Schoenstatt Editions USA.

Chicago-viite (17. p.)

Wolf, Peter, ja Margret Gründing. A Picture Goes Around the World: 1915-2015, Schoenstatt's Marian Image. Waukesha, WI: Schoenstatt Editions USA, 2019.

MLA-viite (8. p.)

Wolf, Peter, ja Margret Gründing. A Picture Goes Around the World: 1915-2015, Schoenstatt's Marian Image. Schoenstatt Editions USA, 2019.