Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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