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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Patrick, 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Patrick, Paul S. Vetter. Open and Positive: An Account of How John Warburton Came Out at School and the Consequences. Gay Teacher's Group, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.