Citação norma APA

Eckner, R. J., & Hettrick, K. L. (1977). Defective Friend Spleen Focus-Forming Virus: Interfering Properties and Isolation Free from Standard Leukemia-Inducing Helper Virus.

Citação norma Chicago

Eckner, Robert J., and Kristine L. Hettrick. Defective Friend Spleen Focus-Forming Virus: Interfering Properties and Isolation Free From Standard Leukemia-Inducing Helper Virus. 1977.

Citação norma MLA

Eckner, Robert J., and Kristine L. Hettrick. Defective Friend Spleen Focus-Forming Virus: Interfering Properties and Isolation Free From Standard Leukemia-Inducing Helper Virus. 1977.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.