Citazione Stile APA (7a Edizione)

Shackley, M. S. (2005). Obsidian: Geology and archaeology in the North American southwest. University of Arizona Press.

Citazione stile Chigago Style (17a edizione)

Shackley, M. Steven. Obsidian: Geology and Archaeology in the North American Southwest. Tucson: University of Arizona Press, 2005.

Citatione MLA (9a ed.)

Shackley, M. Steven. Obsidian: Geology and Archaeology in the North American Southwest. University of Arizona Press, 2005.