Tipton, I. (1974). Berkeley: The philosophy of immaterialism. Methuen & Co..
Lua i Stíl Chicago (17ú heag.)Tipton, I.C. Berkeley: The Philosophy of Immaterialism. London: Methuen & Co., 1974.
Lua MLA (9ú heag.)Tipton, I.C. Berkeley: The Philosophy of Immaterialism. Methuen & Co., 1974.
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