Ruhlen, M. 1. (1991). A guide to the world's languages. Stanford (California): Stanford University Press.
Chicago Style CitationRuhlen, Merritt 1944-. A Guide to the World's Languages. Stanford (California): Stanford University Press, 1991.
MLA CitationRuhlen, Merritt 1944-. A Guide to the World's Languages. Stanford (California): Stanford University Press, 1991.
Warning: These citations may not always be 100% accurate.