APA
Harper R. W., . (1981). A guide to respiratory care : physiology and clinical applications. Philadelphia: J. B. Lippincott & Co.
Chicago
Harper Rosalind W, . 1981. A guide to respiratory care : physiology and clinical applications. Philadelphia: J. B. Lippincott & Co.
Harvard
Harper R. W., . (1981). A guide to respiratory care : physiology and clinical applications. Philadelphia: J. B. Lippincott & Co.
MLA
Harper Rosalind W, . A guide to respiratory care : physiology and clinical applications. Philadelphia: J. B. Lippincott & Co. 1981.