Ruhlen, M. (1998). Why kaka and aya? Functional approaches to language, culture and cognition, David G. Lockwood, Peter H. Fries, James E. Copeland, Amsterdam, 2000, p. 513-520 (Amsterdam studies in the theory and history of linguistic science), 513.
Chicago Style (17th ed.) CitationRuhlen, Merritt. "Why Kaka and Aya?" Functional Approaches to Language, Culture and Cognition, David G. Lockwood, Peter H. Fries, James E. Copeland, Amsterdam, 2000, P. 513-520 (Amsterdam Studies in the Theory and History of Linguistic Science) 1998: 513.
MLA (9th ed.) CitationRuhlen, Merritt. "Why Kaka and Aya?" Functional Approaches to Language, Culture and Cognition, David G. Lockwood, Peter H. Fries, James E. Copeland, Amsterdam, 2000, P. 513-520 (Amsterdam Studies in the Theory and History of Linguistic Science), 1998, p. 513.