"CITES trade database". Retrieved 2011-11-15. Data excludes some genera in the family Psittacidae, including Pesoporous, Poicephalus, Tangnathus, Strigops, Rhynchopsitta, Purpureicephalus, Psittrichus, Psittinus, Triclaria, and Touit.
Pires, Stephen F. (2015). "The Heterogenicity of Illegal Parrot Markets: An Analysis of Seven Neotropical Open Air Markets". European Journal on Criminal Policy and Research. 21. Springer: 151–166. doi:10.1007/s10610-014-9246-6. S2CID154596917.
Pires, Stephen S.; Clarke, Ronald V. (2012). "Are Parrots Craved? An Analysis of Parrot Poaching in Mexico". Journal of Research in Crime and Delinquency. 49. SAGE: 122–146. doi:10.1177/0022427810397950. S2CID145534061.
Alacs, Erika; Georges, Arthur (2008). "Wildlife across our borders: a review of the illegal trade in Australia". Australian Journal of Forensic Sciences. 40 (2): 147–160. doi:10.1080/00450610802491382. S2CID57018987.
Pires, Stephen F. (2015). "The Heterogenicity of Illegal Parrot Markets: An Analysis of Seven Neotropical Open Air Markets". European Journal on Criminal Policy and Research. 21. Springer: 151–166. doi:10.1007/s10610-014-9246-6. S2CID154596917.
Pires, Stephen S.; Clarke, Ronald V. (2012). "Are Parrots Craved? An Analysis of Parrot Poaching in Mexico". Journal of Research in Crime and Delinquency. 49. SAGE: 122–146. doi:10.1177/0022427810397950. S2CID145534061.
Alacs, Erika; Georges, Arthur (2008). "Wildlife across our borders: a review of the illegal trade in Australia". Australian Journal of Forensic Sciences. 40 (2): 147–160. doi:10.1080/00450610802491382. S2CID57018987.