APA-Zitierstil (7. Ausg.)

Paton, A., & Gardner, C. O. (1975). Knocking on the door. D. Philip ; obtainable from C. Scribner.

Chicago-Zitierstil (17. Ausg.)

Paton, Alan, und Colin Oxenham Gardner. Knocking on the Door. Cape Town : New York: D. Philip ; obtainable from C. Scribner, 1975.

MLA-Zitierstil (8. Ausg.)

Paton, Alan, und Colin Oxenham Gardner. Knocking on the Door. D. Philip ; obtainable from C. Scribner, 1975.