Cita APA (7a ed.)

Patterson, D., & Hedley, S. (1996). Free-living freshwater protozoa: A colour guide. Wiley & Sons.

Cita Chicago Style (17a ed.)

Patterson, D.J, y Stuart Hedley. Free-living Freshwater Protozoa: A Colour Guide. New York [etc.]: Wiley & Sons, 1996.

Cita MLA (9a ed.)

Patterson, D.J, y Stuart Hedley. Free-living Freshwater Protozoa: A Colour Guide. Wiley & Sons, 1996.