Cita APA

Robertson, J. G. 1., & Robertson, J. G. 1. (1970). A history of german literature (6. edition.). New York, New York.

Citación estilo Chicago

Robertson, John George 1867-1933, y John George 1867-1933 Robertson. A History of German Literature. 6. edition. New York, New York, 1970.

Cita MLA

Robertson, John George 1867-1933, y John George 1867-1933 Robertson. A History of German Literature. 6. edition. New York, New York, 1970.