Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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

Atenció: Aquestes cites poden no estar 100% correctes.