APA (7th ed.) Citation

Wycliffe Bible Translators, Summer Institute of Linguistics, & Grimes, B. F. (1992). Ethnologue: Languages of the world (12th ed.). Summer Institute of Linguistics.

Chicago Style (17th ed.) Citation

Wycliffe Bible Translators, Summer Institute of Linguistics, and Barbara F. Grimes. Ethnologue: Languages of the World. 12th ed. Dallas, Tex.: Summer Institute of Linguistics, 1992.

MLA (9th ed.) Citation

Wycliffe Bible Translators, et al. Ethnologue: Languages of the World. 12th ed. Summer Institute of Linguistics, 1992.

Warning: These citations may not always be 100% accurate.