APA (7th ed.) Citation

Dixon, J. E., Renfrew, C., & Cann, J. R. (1976). Obsidian and the Origins of Trade.

Chicago Style (17th ed.) Citation

Dixon, J. E., Colin Renfrew, and J. R. Cann. Obsidian and the Origins of Trade. 1976.

MLA (8th ed.) Citation

Dixon, J. E., et al. Obsidian and the Origins of Trade. 1976.