APA Handbook of Comparative PsychologyJosep Call, Gordon M. Burghardt, Irene M. Pepperberg, Charles T. Snowdon, Thomas R. Zentall · First published 2017Open the Tome
Social Influences on Vocal DevelopmentCharles T. Snowdon · First published 1997 · Latest edition 2005Open the Tome
Advances in the study of behaviorPeter J. B. Slater, Jay S. Rosenblatt, Charles T. Snowdon · First published 1993 · Latest edition 1997Open the Tome
