APA (7th ed.) Citation

Timmons, B. H., & Ley, R. (1994). Behavioral and psychological approaches to breathing disorders. Plenum.

Chicago Style (17th ed.) Citation

Timmons, Beverly H., and Ronald Ley. Behavioral and Psychological Approaches to Breathing Disorders. New York [etc.]: Plenum, 1994.

MLA (9th ed.) Citation

Timmons, Beverly H., and Ronald Ley. Behavioral and Psychological Approaches to Breathing Disorders. Plenum, 1994.