Laura Barr Lougee. The Web of the Spider. Bloomfield Hills, MI:Cranbrook Institute of Science, 1964.

Arachnology Home Page. The International Society of Arachnology is the premier international scientific society devoted to arachnology. www.arachnology.org

The Cephalopod Page. Created by an expert in the field, this is an accurate, interesting and educational site devoted to Cephalopods. www.thecephalopodpage.org