APA aipamena

Calkins, G. N., & Summers, F. M. (1964). Protozoa in biological research. Hafner Pub. Co..

Chicago Style aipamena

Calkins, Gary N., and Francis M. Summers. Protozoa in Biological Research. New York: Hafner Pub. Co., 1964.

MLA aipamena

Calkins, Gary N., and Francis M. Summers. Protozoa in Biological Research. Hafner Pub. Co., 1964.