APA (7th ed.) Citation

Poppen, R. (1998). Behavioral relaxation training and assessment (2nd ed.). Sage.

Chicago Style (17th ed.) Citation

Poppen, Roger. Behavioral Relaxation Training and Assessment. 2nd ed. Thousand Oaks, California [etc.]: Sage, 1998.

MLA (9th ed.) Citation

Poppen, Roger. Behavioral Relaxation Training and Assessment. 2nd ed. Sage, 1998.