1. Aping language;Wallman,1992
2. A field study of the behavior and social relations of howling monkeys;Carpenter;Comp. Psychol. Monog.,1934
3. Auditory communication among vervet monkeys (Cercopithecus aethiops);Struhsaker,1967
4. Experimental playbacks show vocal mediation of intergroup avoidance in a forest monkey;Waser;Nature,1975
5. Can monkeys talk?;Unknown,1890