* {{cite book|first=Joseph M.|last=Forshaw|authorlink=Joseph Forshaw|title=Parrots of the World; an Identification Guide|others =Ilustrasi oleh Frank Knight|publisher=[[Princeton University Press]]|isbn=0691092516|page=|nopp = yes|year=2006 }}
* {{cite book|first=Jurgen|last=Brockmann|authorlink=Jurgen Brockmann|title=The World of Lovebirds|publisher=[[TFH Publications]]|isbn=0866229272|page=|nopp = yes|year=1990 }}