APA (7th ed.) Citation

Mather, C. The greatest concern in the world: A short and plain essay, to answer that most concerning and all concerning enquiry, What must I do to be saved? : Published, with a design to assist the addresses of good men unto their neighbours, whom they press to mind, the one thing that is needful (The second edition.).

Chicago Style (17th ed.) Citation

Mather, Cotton. The Greatest Concern in the World: A Short and Plain Essay, to Answer That Most Concerning and All Concerning Enquiry, What Must I Do to Be Saved? : Published, with a Design to Assist the Addresses of Good Men Unto Their Neighbours, Whom They Press to Mind, the One Thing That Is Needful. The second edition.

MLA (9th ed.) Citation

Mather, Cotton. The Greatest Concern in the World: A Short and Plain Essay, to Answer That Most Concerning and All Concerning Enquiry, What Must I Do to Be Saved? : Published, with a Design to Assist the Addresses of Good Men Unto Their Neighbours, Whom They Press to Mind, the One Thing That Is Needful. The second edition.

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