APA-referens (7:e uppl.)

Weigel, G. (1957). A Catholic primer on the ecumenical movement. Newman Press.

Chicago-referens (17:e uppl.)

Weigel, Gustave. A Catholic Primer on the Ecumenical Movement. Westminster, Md.: Newman Press, 1957.

MLA-referens (8:e uppl.)

Weigel, Gustave. A Catholic Primer on the Ecumenical Movement. Newman Press, 1957.