(1967). Encyclopedia Americana ( Volume 20: Navajo to Opium ) (International ed.). Americana Corp..
Chicago Style (17th ed.) CitationEncyclopedia Americana ( Volume 20: Navajo to Opium ). International ed. New York: Americana Corp., 1967.
MLA (8th ed.) CitationEncyclopedia Americana ( Volume 20: Navajo to Opium ). International ed. Americana Corp., 1967.
Warning: These citations may not always be 100% accurate.