Amarasinghe, Y. R. (1974). Trotskyism in Ceylon: A study of the development, ideology and political role of Lanka Sama Samaja party, 1935-1964. British Library Document Supply Centre.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Amarasinghe, Yodage Ranjith. Trotskyism in Ceylon: A Study of the Development, Ideology and Political Role of Lanka Sama Samaja Party, 1935-1964. Boston Spa, United Kindom: British Library Document Supply Centre, 1974.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Amarasinghe, Yodage Ranjith. Trotskyism in Ceylon: A Study of the Development, Ideology and Political Role of Lanka Sama Samaja Party, 1935-1964. British Library Document Supply Centre, 1974.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.