Cita APA

Nelson, F. W., & Howard, D. S. (1986). Trace element analysis of obsidian artifacts from el mirador, Guatemala. Provo, Utah: New World Archaeological Foundation.

Citación estilo Chicago

Nelson, Fred W., y David S. Howard. Trace Element Analysis of Obsidian Artifacts From El Mirador, Guatemala. Provo, Utah: New World Archaeological Foundation, 1986.

Cita MLA

Nelson, Fred W., y David S. Howard. Trace Element Analysis of Obsidian Artifacts From El Mirador, Guatemala. Provo, Utah: New World Archaeological Foundation, 1986.