Wierzbicka, Anna (1995). *Adjectives vs. verbs: The iconicity of part-of-speech membership. In Marge E. Landsberg (Ed.), Syntactic iconicity and linguistic freezes (pp. 223-245). Berlin: Walter de Gruyter. DOI: 10.1515/9783110882926.223
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A resource base of publications using the Natural Semantic Metalanguage approach. 1,100+ detailed notices, and counting!