Callender, G.R. and J.S. Simmons. "Trichomoniasis (T. columbae) in the Java sparrow, Tovi parakeet and Verraux's dove," American Journal of Tropical Medical Hygiene, 17 (1937): 579-585.
Clark, George A., Jr. "Avian Bill-Wiping," The Wilson Bulletin," (Sep. 1970) 82:279-288 (re: B. jugularis: 282).
Harris, Robbie. "The Tovi Parakeet," A.F.A. Watchbird, 1 (1988): 61-63.
Hood, R. "Tovi Parrakeets (sic)," Foreign Birds, 27 (1961): 74-?.
Janzen, D.H. "Brotogeris Jugularis," in Janzen, D.H., Costa Rican Natural History, Chicago University Press: Chicago, 1984: 548-550.
Kricher, John C. A Neotropical Companion, Princeton, NJ: Princeton University Press, 1989: 261 (canary wing) & 234-235 (orange chin).
Kricher, John. "Neotropical Birds" in A Neotropical Companion, Chapter 12 [mentions orange chin].
Kroodsma, Donald E., Edward H. Miller, and Henri Ouellet, Eds. Acoustic Communications in Birds, "Song Learning and Its Consequences," vol. 2, Academic Press: New York (1982) (orange chin).
Kroodsma, Donald E. and Edward H. Miller, Eds. Ecology and Evolution of Acoustic Communication in Birds, Cornell University Press: Ithaca & London (1996): 115,401 (orange chin).
Martin, Thomas E. and James R. Karr. "Temporal Dynamics of Neotropical Birds with Special Reference to Frugivores in Second-Growth Woods," The Wilson Bulletin," (March 1986) 98:38-60 (B. jugularis).
Power, Dennis M. "Agonistic Behavior and Vocalizations of Orange-chinned Parakeets in Captivity," Condor, 68 (1966): 562-581.
Power, Dennis M. "Antiphonal Dueting and Evidence for Auditory Reaction in the Orange-chinned Parakeet," Auk, 83 (1966): 314-319.
Power, Dennis M. "Epigamic and Reproductive Behavior of Orange-chinned Parakeets in Captivity," Condor, 69 (1967): 28-41.
Vriends, Matthew M. Simon & Schuster's Guide to Pet Birds, New York: Simon and Schuster, Inc., 1984 (canary wing: 170/orange chin: 171).
