APA

Pritchard P. C. H., . (1979). The subgenus Chelonoidis also includes the famous giant tortoises of the Galapagos Islands?. Neptune, USA: T. F. H. Publications.

Chicago

Pritchard Peter C H, . 1979. The subgenus Chelonoidis also includes the famous giant tortoises of the Galapagos Islands?. Neptune, USA: T. F. H. Publications.

Harvard

Pritchard P. C. H., . (1979). The subgenus Chelonoidis also includes the famous giant tortoises of the Galapagos Islands?. Neptune, USA: T. F. H. Publications.

MLA

Pritchard Peter C H, . The subgenus Chelonoidis also includes the famous giant tortoises of the Galapagos Islands?. Neptune, USA: T. F. H. Publications. 1979.