Gochfeld, M. 1973. Ecologic Aspects of Ectopic Populations of Monk Parakeets (Myiopsitta monachus) and Possible Agricultural Consequences. The Journal of Agriculture of the University of Puerto Rico. 57, 3 (Jul. 1973), 262–270. DOI:https://doi.org/10.46429/jaupr.v57i3.10749.