1. A field study of the behavior and social relations of howling monkeys (Alouatta palliata);Carpenter;Comp. Psychol. Monographs,1934
2. Behavior of red spider monkeys in Panama;J. Mammalogy,1935
3. A field study in Siam of the behavior and social relations of the gibbon (Hylobates lar);Comp. Psychol. Monographs,1940
4. Sexual behavior of free ranging Rhesus monkeys (Macaca mulatta);J. Comp. Psychol.,1942
5. A field study of population density and social organization in howling monkeys;Collias;Progr. Amer. Philosoph. Soc.,1952