APA引文

Steffen, D. L., Bird, S., & Weinberg, R. A. (1980). Evidence for the Asiatic origin of endogenous AKR-type murine leukemia proviruses.

Citação norma Chicago

Steffen, D L., S. Bird, and R A. Weinberg. Evidence for the Asiatic Origin of Endogenous AKR-type Murine Leukemia Proviruses. 1980.

MLA引文

Steffen, D L., S. Bird, and R A. Weinberg. Evidence for the Asiatic Origin of Endogenous AKR-type Murine Leukemia Proviruses. 1980.

警告：這些引文格式不一定是100％准確.