Barbour, I. G. (1976). Myths, models and paradigms. HarperSanFrancisco.
Lua i Stíl Chicago (17ú heag.)Barbour, Ian G. Myths, Models and Paradigms. New York: HarperSanFrancisco, 1976.
Lua MLA (9ú heag.)Barbour, Ian G. Myths, Models and Paradigms. HarperSanFrancisco, 1976.
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