APA

Iverson J. B., College E., . (1992). A revised checklist with distribution maps of the turtles of the world. The United States of America: s. n.

Chicago

Iverson John B, College Earlham, . 1992. A revised checklist with distribution maps of the turtles of the world. The United States of America: s. n.

Harvard

Iverson J. B., College E., . (1992). A revised checklist with distribution maps of the turtles of the world. The United States of America: s. n.

MLA

Iverson John B, College Earlham, . A revised checklist with distribution maps of the turtles of the world. The United States of America: s. n. 1992.