Burnet, G., & Boyle, R. (1686). Some letters: Containing an account of what seemed most remarkable in Switzerland, Italy &c. [publisher not identified].
Chicago Style (17th ed.) CitationBurnet, Gilbert, and Robert Boyle. Some Letters: Containing an Account of What Seemed Most Remarkable in Switzerland, Italy &c. Amsterdam: [publisher not identified], 1686.
MLA (9th ed.) CitationBurnet, Gilbert, and Robert Boyle. Some Letters: Containing an Account of What Seemed Most Remarkable in Switzerland, Italy &c. [publisher not identified], 1686.
Warning: These citations may not always be 100% accurate.