APA (7th ed.) Citation

Schaeffer, F. A. (1970). The mark of the Christian. Inter-Varsity Press.

Chicago Style (17th ed.) Citation

Schaeffer, Francis A. The Mark of the Christian. Downers Grove, Ill.: Inter-Varsity Press, 1970.

MLA (9th ed.) Citation

Schaeffer, Francis A. The Mark of the Christian. Inter-Varsity Press, 1970.