Townsend, D. (1997). An introduction to aesthetics. Blackwell.
Chicago Style (17th ed.) ZitazioaTownsend, Dabney. An Introduction to Aesthetics. Oxford: Blackwell, 1997.
MLA (9th ed.) ZitazioaTownsend, Dabney. An Introduction to Aesthetics. Blackwell, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.