The text of Ray's 'Methodus insectorum: ..' of 1705 is reprinted as a prolegomena to this work. Reproduction of original from the British Library. Available online to authorized PSU users as part of the Medicine, science, and technology series of Eighteenth century collections online.
Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2003. Available via the World Wide Web. Access limited by licensing agreements
G. Keynes, 'John Ray a bibliography', (1951), 104 English Short Title Catalog, ESTCT93679.