al-Hashimi, R. (1972). Obsidian Stone and the Origins of Trade.
Chicago Style (17th ed.) Citational-Hashimi, R. Obsidian Stone and the Origins of Trade. 1972.
MLA (8th ed.) Citational-Hashimi, R. Obsidian Stone and the Origins of Trade. 1972.
Warning: These citations may not always be 100% accurate.