Alexander, G. W. (1842). Letters on the slave-trade, slavery, and emancipation: With a reply to objections made to the liberation of the slaves in the Spanish colonies; addressed to friends on the continent of Europe, during a visit to Spain and Portugal. C. Gilpin [etc.].
Chicago Style (17th ed.) CitationAlexander, Geo. W. Letters on the Slave-trade, Slavery, and Emancipation: With a Reply to Objections Made to the Liberation of the Slaves in the Spanish Colonies; Addressed to Friends on the Continent of Europe, During a Visit to Spain and Portugal. London: C. Gilpin [etc.], 1842.
MLA (9th ed.) CitationAlexander, Geo. W. Letters on the Slave-trade, Slavery, and Emancipation: With a Reply to Objections Made to the Liberation of the Slaves in the Spanish Colonies; Addressed to Friends on the Continent of Europe, During a Visit to Spain and Portugal. C. Gilpin [etc.], 1842.