APA (7th ed.) Citation

O'Connell, T. X. (2014). USMLE step 2 secrets (Fourth edition.). Elsevier Saunders.

Chicago Style (17th ed.) Citation

O'Connell, Theodore X. USMLE Step 2 Secrets. Fourth edition. Philadelphia, Pa.: Elsevier Saunders, 2014.

MLA (9th ed.) Citation

O'Connell, Theodore X. USMLE Step 2 Secrets. Fourth edition. Elsevier Saunders, 2014.

Warning: These citations may not always be 100% accurate.