Rupiper, O. J. (1964). Item-writing: A programmed text of rules for writing objective-type test items. Harlow Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRupiper, Omer John. Item-writing: A Programmed Text of Rules for Writing Objective-type Test Items. Norman, Oklahoma: Harlow Publishing, 1964.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRupiper, Omer John. Item-writing: A Programmed Text of Rules for Writing Objective-type Test Items. Harlow Publishing, 1964.
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