Cita APA

Grimm, J., Grimm, W., & Heyer, M. (1993). Iron Hans. Puffin Books.

Citación estilo Chicago

Grimm, Jacob, Wilhelm Grimm, and Merilee Heyer. Iron Hans. New York: Puffin Books, 1993.

Cita MLA

Grimm, Jacob, et al. Iron Hans. Puffin Books, 1993.