توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Great Britain. Prime Minister & Great Britain. Public Record Office. (1972). Operational correspondence and papers. Public Record Office.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Great Britain. Prime Minister و Great Britain. Public Record Office. Operational Correspondence and Papers. London: Public Record Office, 1972.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Great Britain. Prime Minister و Great Britain. Public Record Office. Operational Correspondence and Papers. Public Record Office, 1972.