APA (7th ed.) Citation

Barone, J., & Castro, M. A. (2021). USMLE step 1 lecture notes 2021. Kaplan.

Chicago Style (17th ed.) Citation

Barone, John, and Manuel A. Castro. USMLE Step 1 Lecture Notes 2021. New York, NY: Kaplan, 2021.

MLA (9th ed.) Citation

Barone, John, and Manuel A. Castro. USMLE Step 1 Lecture Notes 2021. Kaplan, 2021.

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