Harper, A. E. (1992). Preparing Objective Examinations: A Handbook For Teachers, Students And Examiners. Prentice-Hall of India.
Cita Chicago (17th ed.)Harper, A. Edwin. Preparing Objective Examinations: A Handbook For Teachers, Students And Examiners. New Delhi: Prentice-Hall of India, 1992.
Cita MLA (9th ed.)Harper, A. Edwin. Preparing Objective Examinations: A Handbook For Teachers, Students And Examiners. Prentice-Hall of India, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.