Kaplan Educational Centers. (1998). Usmle step 1 - Companion Guide - Course syllabus video lecture notes explanations to the. s.n.
芝加哥风格引文Kaplan Educational Centers. Usmle Step 1 - Companion Guide - Course Syllabus Video Lecture Notes Explanations to the. New York: s.n, 1998.
MLA引文Kaplan Educational Centers. Usmle Step 1 - Companion Guide - Course Syllabus Video Lecture Notes Explanations to the. s.n, 1998.
警告：这些引文格式不一定是100％准确.