APA引文

Krug, R. (1998). Usmle step 1 Review Series: Behavioral Sciences U S Health Care Biostatistics & Epidemiology <i>en</i>.

芝加哥风格引文

Krug, Ronald. Usmle Step 1 Review Series: Behavioral Sciences U S Health Care Biostatistics & Epidemiology <i>en</i>. 1998.

MLA引文

Krug, Ronald. Usmle Step 1 Review Series: Behavioral Sciences U S Health Care Biostatistics & Epidemiology <i>en</i>. 1998.

警告：这些引文格式不一定是100％准确.