Sawyer, R. (1984). Casement: The flawed hero. London: Routledge & Kegan Paul.
Lua i Stíl Chicago (17ú heag.)Sawyer, Roger. Casement: The Flawed Hero. London: Routledge & Kegan Paul, 1984.
Lua MLA (8ú heag.)Sawyer, Roger. Casement: The Flawed Hero. London: Routledge & Kegan Paul, 1984.
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