Gaya APA

Johnson, T, K, S. (1977). The spiritual dialogue. Some insights from the practice of spiritual direction. Petikan dari disertasi P.U.G. . Romae: PUG.

Gaya MLA

Johnson, Timothy, K.,, S.S.. "The spiritual dialogue. Some insights from the practice of spiritual direction. Petikan dari disertasi P.U.G. ". Romae: PUG, 1977. Buku.