APA
O'Brien D. P., . (2004). The Classical Economists Revisited. : Princeton University Press.
Chicago
O'Brien Denis Patrick, . 2004. The Classical Economists Revisited. : Princeton University Press.
Harvard
O'Brien D. P., . (2004). The Classical Economists Revisited. : Princeton University Press.
MLA
O'Brien Denis Patrick, . The Classical Economists Revisited. : Princeton University Press. 2004.