Oster, K. (1950). Cosmic perspective of god and man. s.n.
Cita Chicago (17th ed.)Oster, Kenneth. Cosmic Perspective of God and Man. s.n, 1950.
Cita MLA (9th ed.)Oster, Kenneth. Cosmic Perspective of God and Man. s.n, 1950.
Atenció: Aquestes cites poden no estar 100% correctes.