MLA
Johnson, James, 1777-1845. The influence of tropical climates on European constitutions. 1841. Medical Heritage Imprints Collection . Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/832r4xh15w-cor.
APA, 6th edition
Johnson, James, 1777-1845. (1841)[The influence of tropical climates on European constitutions, 6th edition, revised and greatly improved.]. Medical Heritage Imprints Collection , Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/832r4xh15w-cor.
Chicago
Johnson, James, 1777-1845, The influence of tropical climates on European constitutions, 1841, Medical Heritage Imprints Collection , Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/832r4xh15w-cor.