MLA

Pope, Alexander, 1688-1744. An essay on man / by Alexander Pope esq. ; enlarged and improved by the author ; with the notes of Mr. Warburton.. 1751. https://collections.library.yale.edu/catalog/10191755.

APA, 6th edition

Pope, Alexander, 1688-1744. (1751)[An essay on man / by Alexander Pope esq. ; enlarged and improved by the author ; with the notes of Mr. Warburton.]. https://collections.library.yale.edu/catalog/10191755.