APA (7th ed.) Citation

Mather, C., & Browne, S. (1765). The greatest concern in the world: A short and plain essay to answer that most concerning and all concerning inquiry, What must I do to be saved? Now published with a design to assist the addresses of good men unto their neighbours, whom they press to mind the one thing needful (The fourth edition.). Printed for and sold by Roger Sherman and Benjamin Mecom in New-Haven.

Chicago Style (17th ed.) Citation

Mather, Cotton, and Simon Browne. The Greatest Concern in the World: A Short and Plain Essay to Answer That Most Concerning and All Concerning Inquiry, What Must I Do to Be Saved? Now Published with a Design to Assist the Addresses of Good Men Unto Their Neighbours, Whom They Press to Mind the One Thing Needful. The fourth edition. [New Haven, Conn.]: Printed for and sold by Roger Sherman and Benjamin Mecom in New-Haven, 1765.

MLA (9th ed.) Citation

Mather, Cotton, and Simon Browne. The Greatest Concern in the World: A Short and Plain Essay to Answer That Most Concerning and All Concerning Inquiry, What Must I Do to Be Saved? Now Published with a Design to Assist the Addresses of Good Men Unto Their Neighbours, Whom They Press to Mind the One Thing Needful. The fourth edition. Printed for and sold by Roger Sherman and Benjamin Mecom in New-Haven, 1765.

Warning: These citations may not always be 100% accurate.