Francois' langur studbook, Presbytis francoisi francoisi, (Living  populations through 31 December 1992)
Subtitle: North American Region
By: Dennis  E. Pate, studbook keeper.
Contributors: Pate, Dennis E.
Publisher: Metro Washington Park Zoo
Published: 1992
Place of publication: Portland, Ore
Language: eng
Subjects: Breeding; Cercopithecidae
Other titles: Studbook.