Barton Perry, R. (1950). General theory of value: Its meaning and basic principles construed in terms of interest. Harvard Univ. Press.
Chicago-referens (17:e uppl.)Barton Perry, Ralph. General Theory of Value: Its Meaning and Basic Principles Construed in Terms of Interest. Cambridge, Mass.: Harvard Univ. Press, 1950.
MLA-referens (8:e uppl.)Barton Perry, Ralph. General Theory of Value: Its Meaning and Basic Principles Construed in Terms of Interest. Harvard Univ. Press, 1950.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.