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.
Chicago-viite (17. p.)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.
MLA-viite (8. p.)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.
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