APA (7th ed.) Citation

Asbjørnsen, P. C., Moe, J. E., & Stobbs, W. (1968). The three billy goats Gruff: A picture book. McGraw-Hill.

Chicago Style (17th ed.) Citation

Asbjørnsen, Peter Christen, Jørgen Engebretsen Moe, and William Stobbs. The Three Billy Goats Gruff: A Picture Book. New York: McGraw-Hill, 1968.

MLA (9th ed.) Citation

Asbjørnsen, Peter Christen, et al. The Three Billy Goats Gruff: A Picture Book. McGraw-Hill, 1968.