1. Caldwell, D. K.: A nesting report on the American ridley. Int., Turtle Tort. Soc. J. 1, 10?13 (1966).
2. ? and R. S. Casebeer: A note on the nesting of the East Pacific ridley sea turtle, Lepidochelys olivacea. Herpetologica 20, p. 213 (1964).
3. Carr, A. F.: Handbook of turtles, 542 pp. Ithaca, New York: Comstock Publ. Ass. 1952.
4. ?: The riddle of the ridley. Anim. Kingd. 58, 148?156 (1955).
5. ?: The windward road, 258 pp. New York: Alfred Knopf 1956.