APA引文

Maestro, M., & Maestro, G. (1996). What do you hear when cows sing?: And other silly riddles. HarperCollinsPublishers.

Chicago Style (17th ed.) Citation

Maestro, Marco, and Giulio Maestro. What Do You Hear When Cows Sing?: And Other Silly Riddles. [New York]: HarperCollinsPublishers, 1996.

MLA引文

Maestro, Marco, and Giulio Maestro. What Do You Hear When Cows Sing?: And Other Silly Riddles. HarperCollinsPublishers, 1996.

警告：這些引文格式不一定是100％准確.