[The supplement to a small treatise called Salt-water sweetned : shewing the great advantages both by sea and by land, of sea-water made fresh : together with the Honourable Mr. Boyle’s letter, and the approbation of the Colledge of physicians, of the wholsomness of this water : and also the conditions on which the pantentees and others concern’d, do intend to contract with such as shall please to deal with them for the use of this invention]
MLA
Boyle, Robert, Hon., 1627-1691. Letter ... to the learned Dr. John Beale, Fitzgerald, Robert, 1638?-1698. [The supplement to a small treatise called Salt-water sweetned : shewing the great advantages both by sea and by land, of sea-water made fresh : together with the Honourable Mr. Boyle’s letter, and the approbation of the Colledge of physicians, of the wholsomness of this water : and also the conditions on which the pantentees and others concern’d, do intend to contract with such as shall please to deal with them for the use of this invention]. 1684. https://collections.library.yale.edu/catalog/2067212.
APA, 6th edition
Boyle, Robert, Hon., 1627-1691. Letter ... to the learned Dr. John Beale, & Fitzgerald, Robert, 1638?-1698. (1684)[[The supplement to a small treatise called Salt-water sweetned : shewing the great advantages both by sea and by land, of sea-water made fresh : together with the Honourable Mr. Boyle’s letter, and the approbation of the Colledge of physicians, of the wholsomness of this water : and also the conditions on which the pantentees and others concern’d, do intend to contract with such as shall please to deal with them for the use of this invention]]. https://collections.library.yale.edu/catalog/2067212.