Cita APA (7th ed.)

Summers, D. C. S. (2010). Quality (5th ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Summers, Donna C. S. Quality. 5th ed. Boston: Prentice-Hall, 2010.

Cita MLA (9th ed.)

Summers, Donna C. S. Quality. 5th ed. Prentice-Hall, 2010.