MLA
Hadley, George, -1798. A compendious grammar of the current corrupt dialect of the jargon of Hindostan, (commonly called Moors) : with a vocabulary, English and Moors, Moors and English ... to which are added familiar phrases and dialogues, etc. etc., with notes descriptive of various customs and manners of Bengal. 1809. South Asia Open Archives at Emory. Pitts Theology Library. https://digital.library.emory.edu/purl/095j9kd60m-cor.
APA, 6th edition
Hadley, George, -1798. (1809)[A compendious grammar of the current corrupt dialect of the jargon of Hindostan, (commonly called Moors) : with a vocabulary, English and Moors, Moors and English ... to which are added familiar phrases and dialogues, etc. etc., with notes descriptive of various customs and manners of Bengal, 7th edition cor., improved, and much enlarged.]. South Asia Open Archives at Emory, Pitts Theology Library. https://digital.library.emory.edu/purl/095j9kd60m-cor.
Chicago
Hadley, George, -1798, A compendious grammar of the current corrupt dialect of the jargon of Hindostan, (commonly called Moors) : with a vocabulary, English and Moors, Moors and English ... to which are added familiar phrases and dialogues, etc. etc., with notes descriptive of various customs and manners of Bengal, 1809, South Asia Open Archives at Emory, Pitts Theology Library. https://digital.library.emory.edu/purl/095j9kd60m-cor.