APA (7th ed.) Citation

Robertson, J. (1959). A history of German literature (3rd ed.). Blackwood.

Chicago Style (17th ed.) Citation

Robertson, J.D. A History of German Literature. 3rd ed. Edinb.: Blackwood, 1959.

MLA (8th ed.) Citation

Robertson, J.D. A History of German Literature. 3rd ed. Blackwood, 1959.