Suggestion". Yearbook of the International Folk Music Council 8:35–42. Rosch, Eleanor. 1973. "Natural Categories". Cognitive Psychology 4, no. 3 (May):
49 (3): 437–455. JSTOR 1902564. MacIntyre, A. Everette; Volhard, Joachim J. The Federal Trade Commission. Boston College Law Review. 1970, 11 (4): 723–783