Cita APA (7a ed.)

Patterson, D. J., & Hedley, S. (1998). Free-living freshwater protozoa: A colour guide (Repr.). Manson [etc.].

Cita Chicago Style (17a ed.)

Patterson, David J., y Stuart Hedley. Free-living Freshwater Protozoa: A Colour Guide. Repr. London [etc.]: Manson [etc.], 1998.

Cita MLA (9a ed.)

Patterson, David J., y Stuart Hedley. Free-living Freshwater Protozoa: A Colour Guide. Repr. Manson [etc.], 1998.