Cita APA (7th ed.)

Johnson, D. E., & Samuels, M. L. (1979). Cancer of the genitourinary tract.

Cita Chicago (17th ed.)

Johnson, Douglas E., i Melvin L. Samuels. Cancer of the Genitourinary Tract. 1979.

Cita MLA (9th ed.)

Johnson, Douglas E., i Melvin L. Samuels. Cancer of the Genitourinary Tract. 1979.