Cita APA (7th ed.)

Vaughn, R. C. (1990). Quality assurance. Iowa State University Press.

Cita Chicago (17th ed.)

Vaughn, Richard C. Quality Assurance. Ames: Iowa State University Press, 1990.

Cita MLA (8th ed.)

Vaughn, Richard C. Quality Assurance. Iowa State University Press, 1990.