Stanford University
Standford: Fascioliasis
For a very complete overview of the sheep liver fluke, this site is worth viewing. Topics range from agents of infection to preventative measures. The site contains a life cycle graphic and links to additional websites.
Centers for Disease Control and Prevention
Centers for Disease Control: Parasites and Health: Fascioliasis
This is a detailed overview of the Fascioliasis parasite. The overview includes information about the infectious agent, life cycle, distribution, symptoms and treatment options.
Wikimedia
Wikipedia: Tapeworm
Wikipedia offers detailed information on Cestoda, or the class of tapeworms. Includes a scientific classification chart and hyperlinked terms.
BiologyWise
Biology Wise: What Are the Different Types of Flatworms
Describes the basic characteristics of three of the major kinds of flatworms, including tapeworms, planarians, and flukes.