APA (7th ed.) Citation

Mill, J. S., & Neff, E. (1926). On liberty: And other essays. Book League of America.

Chicago Style (17th ed.) Citation

Mill, John Stuart, and Emery Neff. On Liberty: And Other Essays. New York: Book League of America, 1926.

MLA (9th ed.) Citation

Mill, John Stuart, and Emery Neff. On Liberty: And Other Essays. Book League of America, 1926.