Cita APA (7th ed.)
Harris, J. (1985). The value of life. Routledge & Kegan Paul.
Cita Chicago (17th ed.)
Harris, John. The Value of Life. London ; Boston: Routledge & Kegan Paul, 1985.
Cita MLA (9th ed.)
Harris, John. The Value of Life. Routledge & Kegan Paul, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.