APA (7th ed.) Citation

Ahearn, A., & Ahearn, P. (1990). Author price guides. Q&B.

Chicago Style (17th ed.) Citation

Ahearn, Allen, and Patricia Ahearn. Author Price Guides. Rockville, Md.: Q&B, 1990.

MLA (9th ed.) Citation

Ahearn, Allen, and Patricia Ahearn. Author Price Guides. Q&B, 1990.

Warning: These citations may not always be 100% accurate.