Harper, A. E., & Harper, E. S. (1992). Preparing Objective Examinations: A Hand book for Teachers, Students and Examiners. Prentice-Hall of India.
শিকাগো স্টাইলে সাইটেশনHarper, A Edwin, এবং Erika S. Harper. Preparing Objective Examinations: A Hand Book for Teachers, Students and Examiners. New Delhi: Prentice-Hall of India, 1992.
এমএলএ সাইটেশনHarper, A Edwin, এবং Erika S. Harper. Preparing Objective Examinations: A Hand Book for Teachers, Students and Examiners. Prentice-Hall of India, 1992.
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