Mill, J., Lauderdale, J. M., & Malthus, T. R. (1993). An essay on the impolicy of a bounty on the exportation of grain. Routledge-Thoemmes Press [etc.].
Chicago Style (17th ed.) CitationMill, James, James Maitland Lauderdale, and Thomas Robert Malthus. An Essay on the Impolicy of a Bounty on the Exportation of Grain. London [etc.]: Routledge-Thoemmes Press [etc.], 1993.
MLA (9th ed.) CitationMill, James, et al. An Essay on the Impolicy of a Bounty on the Exportation of Grain. Routledge-Thoemmes Press [etc.], 1993.
Warning: These citations may not always be 100% accurate.