APA引文

Petrillo, G., & Lyon, L. (2007). Keep your ear on the ball (1st hardcover ed.). Tilbury House.

Chicago Style (17th ed.) Citation

Petrillo, Genevieve, and Lea Lyon. Keep Your Ear on the Ball. 1st hardcover ed. Gardiner, Me.: Tilbury House, 2007.

MLA引文

Petrillo, Genevieve, and Lea Lyon. Keep Your Ear on the Ball. 1st hardcover ed. Tilbury House, 2007.

警告：這些引文格式不一定是100％准確.