APA

Richter A. G., Olsen J., Fletcher K., Benirschke K. & Bogart M. (1977). Techniques for collecting blood from Galapagos tortoises and box turtles. : .

Chicago

Richter A G, Olsen J, Fletcher K, Benirschke K and Bogart M. 1977. Techniques for collecting blood from Galapagos tortoises and box turtles. : .

Harvard

Richter A. G., Olsen J., Fletcher K., Benirschke K. and Bogart M. (1977). Techniques for collecting blood from Galapagos tortoises and box turtles. : .

MLA

Richter A G, Olsen J, Fletcher K, Benirschke K and Bogart M. Techniques for collecting blood from Galapagos tortoises and box turtles. : . 1977.