Hartmann, N., & Kelly, E. (2014). Aesthetics. De Gruyter.
Lua i Stíl Chicago (17ú heag.)Hartmann, Nicolai, agus Eugene Kelly. Aesthetics. Boston: De Gruyter, 2014.
Lua MLA (9ú heag.)Hartmann, Nicolai, agus Eugene Kelly. Aesthetics. De Gruyter, 2014.
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