Gaer, J. (1964). Great religions believe. The New American Library.
Cita Chicago (17th ed.)Gaer, Joseph. Great Religions Believe. The New American Library, 1964.
Cita MLA (9th ed.)Gaer, Joseph. Great Religions Believe. The New American Library, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.