APA (7th ed.) Citation

Old Humphrey. (1845). Thoughts for the thoughtful (5th ed.). Robert Carter.

Chicago Style (17th ed.) Citation

Old Humphrey. Thoughts for the Thoughtful. 5th ed. New York: Robert Carter, 1845.

MLA (9th ed.) Citation

Old Humphrey. Thoughts for the Thoughtful. 5th ed. Robert Carter, 1845.

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