Key, H., & Key, M. j. a. (1967). Bolivian Indian tribes: Classification, bibliography, and map of present language distribution. Summer Institute of Linguistics, University of Oklahoma.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Key, Harold, و Mary joint auth Key. Bolivian Indian Tribes: Classification, Bibliography, and Map of Present Language Distribution. Norman: Summer Institute of Linguistics, University of Oklahoma, 1967.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Key, Harold, و Mary joint auth Key. Bolivian Indian Tribes: Classification, Bibliography, and Map of Present Language Distribution. Summer Institute of Linguistics, University of Oklahoma, 1967.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.