Jelaskan Daftar pustaka dari Boa pembelit

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.