APA (7th ed.) Citation

Carl, A. (2005). USMLE step 1 made ridiculously simple (Interactive edition.). MedMaster.

Chicago Style (17th ed.) Citation

Carl, Andreas. USMLE Step 1 Made Ridiculously Simple. Interactive edition. Miami: MedMaster, 2005.

MLA (9th ed.) Citation

Carl, Andreas. USMLE Step 1 Made Ridiculously Simple. Interactive edition. MedMaster, 2005.

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