Harper, A. E., & Harper, E. S. (1992). Preparing Objective Examinations: A Hand book for Teachers, Students and Examiners. Prentice-Hall of India.
Dyfyniad Arddull ChicagoHarper, A Edwin, and Erika S. Harper. Preparing Objective Examinations: A Hand Book for Teachers, Students and Examiners. New Delhi: Prentice-Hall of India, 1992.
Dyfyniad MLAHarper, A Edwin, and Erika S. Harper. Preparing Objective Examinations: A Hand Book for Teachers, Students and Examiners. Prentice-Hall of India, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.