Cita APA

Ruhlen, M. 1. (1991). A guide to the world's languages. Stanford (California): Stanford University Press.

Citación estilo Chicago

Ruhlen, Merritt 1944-. A Guide to the World's Languages. Stanford (California): Stanford University Press, 1991.

Cita MLA

Ruhlen, Merritt 1944-. A Guide to the World's Languages. Stanford (California): Stanford University Press, 1991.