MLA
Comstock, J. L. (John Lee), 1789-1858. Elements of chemistry in which the recent discoveries in the science are included and its doctrines familiarly explained : by John Lee Comstock.. 1852. Medical Heritage Imprints Collection . Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/450gthtbc3-cor.
APA, 6th edition
Comstock, J. L. (John Lee), 1789-1858. (1852)[Elements of chemistry in which the recent discoveries in the science are included and its doctrines familiarly explained : by John Lee Comstock., 54th edition.]. Medical Heritage Imprints Collection , Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/450gthtbc3-cor.
Chicago
Comstock, J. L. (John Lee), 1789-1858, Elements of chemistry in which the recent discoveries in the science are included and its doctrines familiarly explained : by John Lee Comstock., 1852, Medical Heritage Imprints Collection , Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/450gthtbc3-cor.