APA (7th ed.) Citation

Christensen, C., & Christensen, W. (1990). Careful! someone's listening: Recognizing the importance of your words. Moody Press.

Chicago Style (17th ed.) Citation

Christensen, Chuck, and Winnie Christensen. Careful! Someone's Listening: Recognizing the Importance of Your Words. Chicago: Moody Press, 1990.

MLA (9th ed.) Citation

Christensen, Chuck, and Winnie Christensen. Careful! Someone's Listening: Recognizing the Importance of Your Words. Moody Press, 1990.