Center for Applied Linguistics, Ohannessian, S., Ferguson, C. A., & Polomé, E. C. (1975). Language surveys in developing nations: Papers and reports on sociolinguistic surveys. Center for Applied Linguistics.

Center for Applied Linguistics, Sirarpi Ohannessian, Charles Albert Ferguson, and Edgar C. Polomé. Language Surveys in Developing Nations: Papers and Reports on Sociolinguistic Surveys. Arlington, Va.: Center for Applied Linguistics, 1975.

Center for Applied Linguistics, et al. Language Surveys in Developing Nations: Papers and Reports on Sociolinguistic Surveys. Center for Applied Linguistics, 1975.