Cita APA

Krug, R. (1998). Usmle step 1 Review Series: Behavioral Sciences U S Health Care Biostatistics & Epidemiology. s.n.

Citación estilo Chicago

Krug, Ronald. Usmle Step 1 Review Series: Behavioral Sciences U S Health Care Biostatistics & Epidemiology. Chicago: s.n, 1998.

Cita MLA

Krug, Ronald. Usmle Step 1 Review Series: Behavioral Sciences U S Health Care Biostatistics & Epidemiology. s.n, 1998.