APA (7th ed.) Citation

Wortman, G., & Westphalen, G. J. (2004). Sheep eaters - trading and tools. Documentary Educational Resources.

Chicago Style (17th ed.) Citation

Wortman, Gary, and Gary J. Westphalen. Sheep Eaters - Trading and Tools. Watertown, Mass.: Documentary Educational Resources, 2004.

MLA (9th ed.) Citation

Wortman, Gary, and Gary J. Westphalen. Sheep Eaters - Trading and Tools. Documentary Educational Resources, 2004.