APA (7th ed.) Citation

Cooper, T. (1798). Extract of a letter from a gentleman in America to a friend in England, on the subject on emigration. [publisher not identified].

Chicago Style (17th ed.) Citation

Cooper, Thomas. Extract of a Letter from a Gentleman in America to a Friend in England, on the Subject on Emigration. [London?]: [publisher not identified], 1798.

MLA (9th ed.) Citation

Cooper, Thomas. Extract of a Letter from a Gentleman in America to a Friend in England, on the Subject on Emigration. [publisher not identified], 1798.