Hecker, I. T. (1855). Questions of the soul (6th ed.). Catholic Publication House.
Chicago Style (17th ed.) CitationHecker, Isaac Thomas. Questions of the Soul. 6th ed. New York: Catholic Publication House, 1855.
MLA (8th ed.) CitationHecker, Isaac Thomas. Questions of the Soul. 6th ed. Catholic Publication House, 1855.
Warning: These citations may not always be 100% accurate.