Gaya APA

Vries, P, P, D. (1974). Prayer and life. Transl. by W. Dudok van Heel. . New York dsl: Exposition Press.

Gaya MLA

Vries, Piet, Penning, De. "Prayer and life. Transl. by W. Dudok van Heel. ". New York dsl: Exposition Press, 1974. Buku.