Cita APA (7th ed.)
Strunk, W. (1979). The elements of style (3rd ed.). Macmillan.
Cita Chicago (17th ed.)
Strunk, William. The Elements of Style. 3rd ed. New York: Macmillan, 1979.
Cita MLA (9th ed.)
Strunk, William. The Elements of Style. 3rd ed. Macmillan, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.