APA (7th ed.) Citation
(1988). Ethnologue: Language of the world (11th ed.). Summer institute of linguistics, Inc..
Chicago Style (17th ed.) Citation
Ethnologue: Language of the World. 11th ed. Dallas: Summer institute of linguistics, Inc., 1988.
MLA (9th ed.) Citation
Ethnologue: Language of the World. 11th ed. Summer institute of linguistics, Inc., 1988.
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