Iowa. State Board of Educational Examiners. Library manual for the public schools of Iowa. Prepared by State Board of Educational Examiners.
Παραπομπή σε μορφή Chicago (17η εκδ.)Iowa. State Board of Educational Examiners. Library Manual for the Public Schools of Iowa. Des Moines, Iowa: Prepared by State Board of Educational Examiners.
Παραπομπή σε μορφή MLA (8th εκδ.)Iowa. State Board of Educational Examiners. Library Manual for the Public Schools of Iowa. Prepared by State Board of Educational Examiners.
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