APA (7th ed.) Citation

Letvin, N. L., & Desrosiers, R. C. (1994). Simian Immunodeficiency Virus. Springer Berlin Heidelberg.

Chicago Style (17th ed.) Citation

Letvin, Norman L., and R. C. Desrosiers. Simian Immunodeficiency Virus. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994.

MLA (9th ed.) Citation

Letvin, Norman L., and R. C. Desrosiers. Simian Immunodeficiency Virus. Springer Berlin Heidelberg, 1994.