Cita APA (7a ed.)

Green, T. H. (1987). A guide to prayer: Opening to God. Ave Maria Press.

Cita Chicago Style (17a ed.)

Green, Thomas H. A Guide to Prayer: Opening to God. Michigan: Ave Maria Press, 1987.

Cita MLA (9a ed.)

Green, Thomas H. A Guide to Prayer: Opening to God. Ave Maria Press, 1987.