APA (7 वां संस्करण) प्रशस्ति पत्र

Sykes, C., Waugh, E., Greene, G., & Grisewood, H. (2013). Sykes, Christopher, Papers. DigitalGeorgetown.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Sykes, Christopher, Evelyn Waugh, Graham Greene, और Harman Grisewood. Sykes, Christopher, Papers. Washington, D.C.: DigitalGeorgetown, 2013.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Sykes, Christopher, et al. Sykes, Christopher, Papers. DigitalGeorgetown, 2013.