List, F., Lloyd, S. S., & Nicholson, J. S. (1928). The national system of political economy (New ed.). Longmans, Green.
Chicago Style (17th ed.) CitationList, Friedrich, Sampson S. Lloyd, and J. Shield Nicholson. The National System of Political Economy. New ed. London, New York, Toronto: Longmans, Green, 1928.
MLA (9th ed.) CitationList, Friedrich, et al. The National System of Political Economy. New ed. Longmans, Green, 1928.
Warning: These citations may not always be 100% accurate.