Salkind, N. (1993). Worldperfect 6: Self-teaching guide. Wiley.
Cita Chicago (17th ed.)Salkind, Neil. Worldperfect 6: Self-teaching Guide. New York: Wiley, 1993.
Cita MLA (9th ed.)Salkind, Neil. Worldperfect 6: Self-teaching Guide. Wiley, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.