Cita APA

Pritchard, P. C. H. 1., & Pritchard, P. C. H. 1. (1979). Encyclopedia of turtles. Neptune City, N.J.: TFH.

Citación estilo Chicago

Pritchard, Peter Charles Howard 1943-, y Peter Charles Howard 1943- Pritchard. Encyclopedia of Turtles. Neptune City, N.J.: TFH, 1979.

Cita MLA

Pritchard, Peter Charles Howard 1943-, y Peter Charles Howard 1943- Pritchard. Encyclopedia of Turtles. Neptune City, N.J.: TFH, 1979.