Gray, J. (1995). Liberalism (2nd ed.). Buckingham: Open University Press.
Trích dẫn kiểu ChicagoGray, John. Liberalism. 2nd ed. Buckingham: Open University Press, 1995.
MLA引文Gray, John. Liberalism. 2nd ed. Buckingham: Open University Press, 1995.
警告：這些引文格式不一定是100％准確.