Gaya APA

Vierregger, K., Le, T. (2010). First aid Q & A: for the USMLE step 2 CK . New York: Tata McGraw-Hill.

Gaya MLA

Vierregger, Kristen., Le, Tao. "First aid Q & A: for the USMLE step 2 CK". New York: Tata McGraw-Hill, 2010. Text.