APA ציטוט

Fitch, W. M., Leiter, J. M., Li, X. Q., & Palese, P. (1991). Positive Darwinian evolution in human influenza A viruses. Proc Natl Acad Sci U S A.

Citação norma Chicago

Fitch, W M., J M. Leiter, X Q. Li, and P. Palese. "Positive Darwinian Evolution in Human Influenza A Viruses." Proc Natl Acad Sci U S A 1991.

ציטוט MLA

Fitch, W M., J M. Leiter, X Q. Li, and P. Palese. "Positive Darwinian Evolution in Human Influenza A Viruses." Proc Natl Acad Sci U S A 1991.