Colvin, M., & Hawksley, J. (1989). Section 28: A practical guide to the law and its implications / by Madeleine Colvin with Jane Hawksley. National Council for Civil Liberties.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Colvin, Madeleine, و Jane Hawksley. Section 28: A Practical Guide to the Law and Its Implications / by Madeleine Colvin with Jane Hawksley. London: National Council for Civil Liberties, 1989.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Colvin, Madeleine, و Jane Hawksley. Section 28: A Practical Guide to the Law and Its Implications / by Madeleine Colvin with Jane Hawksley. National Council for Civil Liberties, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.