APA citiranje

Summers, J., Smolec, J. M., & Snyder, R. (1978). A virus similar to human hepatitis B virus associated with hepatitis and hepatoma in woodchucks.

Citação norma Chicago

Summers, J., J M. Smolec, and R. Snyder. A Virus Similar to Human Hepatitis B Virus Associated With Hepatitis and Hepatoma in Woodchucks. 1978.

MLA citiranje

Summers, J., J M. Smolec, and R. Snyder. A Virus Similar to Human Hepatitis B Virus Associated With Hepatitis and Hepatoma in Woodchucks. 1978.