Cita APA (7a ed.)

Mamula, M. (1998). Usmle step 1 - Review Series: Microbiology Immunology. s.n.

Cita Chicago Style (17a ed.)

Mamula, Mark. Usmle Step 1 - Review Series: Microbiology Immunology. Washignton: s.n, 1998.

Cita MLA (9a ed.)

Mamula, Mark. Usmle Step 1 - Review Series: Microbiology Immunology. s.n, 1998.