APA (7th ed.) Citation

Stein, R. H. (1987). The synoptic problem: An introduction. Baker.

Chicago Style (17th ed.) Citation

Stein, Robert H. The Synoptic Problem: An Introduction. Grand Rapids, Mich: Baker, 1987.

MLA (9th ed.) Citation

Stein, Robert H. The Synoptic Problem: An Introduction. Baker, 1987.