Early English Books Online (EEBO) is a collection of digitized historical materials covering the years 1473-1700. EEBO includes historical documents, literature and language, science, medicine and more. The EEBO-TCP project contains transcriptions of many of the EEBO documents, allowing for full-text searching and textual analysis.
An example in MLA Style:
Lodge, Thomas. Euphues Golden Legacie Found after His Death in His Cell at Silexdra: Bequeathed to Philautus Sonnes, Nursed Up with Their Fathers in England: Fetched from the Canaries, by T. L. Gent. London, 1612. Early English Books Online, [supply URL].
*there is no need to include the library that the document is held in.