Sykes, C., Waugh, E., Greene, G., & Grisewood, H. (2013). Sykes, Christopher, Papers. DigitalGeorgetown.
Lua i Stíl Chicago (17ú heag.)Sykes, Christopher, Evelyn Waugh, Graham Greene, agus Harman Grisewood. Sykes, Christopher, Papers. Washington, D.C.: DigitalGeorgetown, 2013.
Lua MLA (8ú heag.)Sykes, Christopher, et al. Sykes, Christopher, Papers. DigitalGeorgetown, 2013.
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