Lua APA (7ú heag.)
Krause, S. J. (1967). Mark Twain as Critic. Johns Hopkins Press.
Lua i Stíl Chicago (17ú heag.)
Krause, Sydney J. Mark Twain as Critic. Baltimore: Johns Hopkins Press, 1967.
Lua MLA (9ú heag.)
Krause, Sydney J. Mark Twain as Critic. Johns Hopkins Press, 1967.
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