Cita APA (7th ed.)

York, M. J., & Idle, M. S. (2013). The three billy goats gruff. Child's World.

Cita Chicago (17th ed.)

York, M. J., i Molly Schaar Idle. The Three Billy Goats Gruff. Mankato, MN: Child's World, 2013.

Cita MLA (8th ed.)

York, M. J., i Molly Schaar Idle. The Three Billy Goats Gruff. Child's World, 2013.