APA (7th ed.) Citation

Sydenham, T., Blankaart, S., & Salmon, W. (1690). A New method of curing the French-pox.

Chicago Style (17th ed.) Citation

Sydenham, Thomas, Steven Blankaart, and William Salmon. A New Method of Curing the French-pox. 1690.

MLA (9th ed.) Citation

Sydenham, Thomas, et al. A New Method of Curing the French-pox. 1690.