Cita APA (7th ed.)

Freedman, H. I., & Strobeck, C. (1983). Population biology. Springer-Verlag.

Cita Chicago (17th ed.)

Freedman, H. I., i C. Strobeck. Population Biology. Berlín: Springer-Verlag, 1983.

Cita MLA (9th ed.)

Freedman, H. I., i C. Strobeck. Population Biology. Springer-Verlag, 1983.