Langridge, L. (1980). Britain and Europe during 1979: A bibliographical guide : an author, title and chronological index to British primary source material on European integration. Harvester Microform.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Langridge, Lorraine. Britain and Europe During 1979: A Bibliographical Guide : An Author, Title and Chronological Index to British Primary Source Material on European Integration. Brighton, Eng.: Harvester Microform, 1980.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Langridge, Lorraine. Britain and Europe During 1979: A Bibliographical Guide : An Author, Title and Chronological Index to British Primary Source Material on European Integration. Harvester Microform, 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.