McNamara, W. (1960). Manual for retreat masters. Bruce Pub. Co.
Chicago Style aipamenaMcNamara, William. Manual for Retreat Masters. Milwaukee: Bruce Pub. Co, 1960.
MLA aipamenaMcNamara, William. Manual for Retreat Masters. Bruce Pub. Co, 1960.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.