Cita APA (7th ed.)

Grenard, S., & Traverse, N. (1981). Introduction to respiratory therapy. Year Book Medical Ppublishers.

Cita Chicago (17th ed.)

Grenard, Steve, i Normen Traverse. Introduction to Respiratory Therapy. Chicago: Year Book Medical Ppublishers, 1981.

Cita MLA (9th ed.)

Grenard, Steve, i Normen Traverse. Introduction to Respiratory Therapy. Year Book Medical Ppublishers, 1981.