Coba jelasin Daftar pustaka dari Boa pembelit dong

Stull OG. 1932. Five new subspecies of the family Boidae. Occasional Papers of the Boston Society of Natural History Vol. 8. p. 25–30. pl. 1-2. HTML version available at boa-subspecies.com. Diakses 20 Februari 2009.

Boa-constrictors.com. Diakses 11 Juli 2009.

Ultimate Boa Constrictor Care Guide . Diakses Januari 2011.

Red-Tail Boa Care at Herp and Green Iguana Information Collection. Diakses 11 Juli 2010.