Patrick, P. S. V. (1978). Open and Positive: An account of how John Warburton came out at School and the consequences. Gay Teacher's Group.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPatrick, Paul S. Vetter. Open and Positive: An Account of How John Warburton Came Out at School and the Consequences. London: Gay Teacher's Group, 1978.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPatrick, Paul S. Vetter. Open and Positive: An Account of How John Warburton Came Out at School and the Consequences. Gay Teacher's Group, 1978.
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