MLA

Esteban, and Tom M Fenchel. Ecology of Protozoa: The Biology of Free-living Phagotrophic Protists. Springer International Publishing, 2020.

APA

Esteban, E., & Fenchel, T. M. (2020). Ecology of Protozoa: The Biology of Free-living Phagotrophic Protists. Springer International Publishing.

Chicago

Esteban, and Tom M Fenchel. Ecology of Protozoa: The Biology of Free-Living Phagotrophic Protists. : Springer International Publishing, 2020.