·        Monkeys of Central and South America.  By Patricia A. Fink Martin, Published by Children’s Press, © 2000.

·        Primates:  Apes, Monkeys, Prosimians.  By Thane Maynard, Published
by Franklin Watts, © 1994.

·        Tamarins.  By Eric Braun and Sandra Donovan, Published by Raintree Steck-Vaughn, © 2002.

·        Amazing Animals of the World, Volume 8:  Cotton-top – Earthworm. 
By Groiler Educational Corporation, Published by Groiler Educational Corporation, © 1995.