Epstein, L. D., Fainsod, M., Garceau, O., Leiserson, A., Lockard, D., Pennock, J. R., . . . Watkins, F. M. (1968). Political research and political theory. Harvard University Press.
Chicago-referens (17:e uppl.)Epstein, Leon D., et al. Political Research and Political Theory. Cambridge, Mass: Harvard University Press, 1968.
MLA-referens (9:e uppl.)Epstein, Leon D., et al. Political Research and Political Theory. Harvard University Press, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.