Lua APA (7ú heag.)
Hopper, K., & Hopper, W. J. (2007). The Puritan gift: Triumph, collapse and revival of an American dream. I. B. Tauris.
Lua i Stíl Chicago (17ú heag.)
Hopper, Kenneth, agus W. J. Hopper. The Puritan Gift: Triumph, Collapse and Revival of an American Dream. London: I. B. Tauris, 2007.
Lua MLA (9ú heag.)
Hopper, Kenneth, agus W. J. Hopper. The Puritan Gift: Triumph, Collapse and Revival of an American Dream. I. B. Tauris, 2007.
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