APA (7th ed.) Citation

Grimm, J., Grimm, W., & Watts, B. (1989). The ragamuffins. North-South Books.

Chicago Style (17th ed.) Citation

Grimm, Jacob, Wilhelm Grimm, and Bernadette Watts. The Ragamuffins. New York: North-South Books, 1989.

MLA (9th ed.) Citation

Grimm, Jacob, et al. The Ragamuffins. North-South Books, 1989.