APA (7th ed.) Citation

Guyatt, G. (2008). Users' guides to the medical literature: Essentials of evidence-based clinical practice (2nd ed.). McGraw-Hill Medical.

Chicago Style (17th ed.) Citation

Guyatt, Gordon. Users' Guides to the Medical Literature: Essentials of Evidence-based Clinical Practice. 2nd ed. New York: McGraw-Hill Medical, 2008.

MLA (9th ed.) Citation

Guyatt, Gordon. Users' Guides to the Medical Literature: Essentials of Evidence-based Clinical Practice. 2nd ed. McGraw-Hill Medical, 2008.