Iowa. State Board of Educational Examiners. Library manual for the public schools of Iowa. Prepared by State Board of Educational Examiners.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Iowa. State Board of Educational Examiners. Library Manual for the Public Schools of Iowa. Des Moines, Iowa: Prepared by State Board of Educational Examiners.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Iowa. State Board of Educational Examiners. Library Manual for the Public Schools of Iowa. Prepared by State Board of Educational Examiners.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.