Gaya APA

Sakala, E, P. (2018). USMLE Step 2 CK Lecture Notes 2018 ObstetricsGynecology . : Kapla.

Gaya MLA

Sakala, Elmar, Peter. "USMLE Step 2 CK Lecture Notes 2018 ObstetricsGynecology". : Kapla, 2018. Text.