APA (7th ed.) Citation

Wolff, E. J., Faktor, E., & Flammer, H. Fairy tales: Marchen.

Chicago Style (17th ed.) Citation

Wolff, Erich J., Emil Faktor, and Harold Flammer. Fairy Tales: Marchen.

MLA (9th ed.) Citation

Wolff, Erich J., et al. Fairy Tales: Marchen.