Willson, R. F. (1980). Writing: Analysis and application. Macmillan.
Cita Chicago (17th ed.)Willson, Robert Frank. Writing: Analysis and Application. New York: Macmillan, 1980.
Cita MLA (9th ed.)Willson, Robert Frank. Writing: Analysis and Application. Macmillan, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.