Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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