Duncan, H. (1972). Heart to heart talks with Jehovah's witnesses. Missionary Cruseder.
Cita Chicago (17th ed.)Duncan, Homer. Heart to Heart Talks with Jehovah's Witnesses. Missionary Cruseder, 1972.
Cita MLA (9th ed.)Duncan, Homer. Heart to Heart Talks with Jehovah's Witnesses. Missionary Cruseder, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.