Hopper, P. J. (1990). Principles of grammaticization: Towards a diachronic typology. Language typology 1987, ed. by W.P. Lehmann, Amsterdam, 1990, P. 157-170 (Amsterdam studies in the theory and history of linguistic science), 157.
Chicago Style (17th ed.) CitationHopper, Paul J. "Principles of Grammaticization: Towards a Diachronic Typology." Language Typology 1987, Ed. by W.P. Lehmann, Amsterdam, 1990, P. 157-170 (Amsterdam Studies in the Theory and History of Linguistic Science) 1990: 157.
MLA (9th ed.) CitationHopper, Paul J. "Principles of Grammaticization: Towards a Diachronic Typology." Language Typology 1987, Ed. by W.P. Lehmann, Amsterdam, 1990, P. 157-170 (Amsterdam Studies in the Theory and History of Linguistic Science), 1990, p. 157.
Warning: These citations may not always be 100% accurate.