"Twig snake". African Snakebite Institute. Diakses tanggal 23 June 2018.
wikipedia.org
fr.wikipedia.org
Goin, Coleman J.; Goin, Olive B.; Zug, George R. (1978). Introduction to Herpetology, Third Edition. San Francisco: W.H. Freeman. xi + 387 pp. ISBN0-7167-0020-4. ("Thelotornis kirtlandi [sic]", p. 322).
de.wikipedia.org
Goin, Coleman J.; Goin, Olive B.; Zug, George R. (1978). Introduction to Herpetology, Third Edition. San Francisco: W.H. Freeman. xi + 387 pp. ISBN0-7167-0020-4. ("Thelotornis kirtlandi [sic]", p. 322).