APA (7th ed.) Citation

Dr. Schrecklichkeit, Spence, R., & Spence, P. Struwwelhitler: A Nazi story book; [a parody on the original Struwwelpeter].

Chicago Style (17th ed.) Citation

Dr. Schrecklichkeit, Robert Spence, and Philip Spence. Struwwelhitler: A Nazi Story Book; [a Parody on the Original Struwwelpeter]. [Köln].

MLA (8th ed.) Citation

Dr. Schrecklichkeit, et al. Struwwelhitler: A Nazi Story Book; [a Parody on the Original Struwwelpeter].