O'Brien, D. P. (1975). The classical economists. Clarendon.
Chicago Style (17th ed.) CitationO'Brien, D. P. The Classical Economists. Oxford: Clarendon, 1975.
MLA (9th ed.) CitationO'Brien, D. P. The Classical Economists. Clarendon, 1975.
Warning: These citations may not always be 100% accurate.