Ohio Society of Surveyors and Civil Engineers. Annual report of the Ohio Society of Surveyors and Civil Engineers. Hann & Adair.
Παραπομπή σε μορφή Chicago (17η εκδ.)Ohio Society of Surveyors and Civil Engineers. Annual Report of the Ohio Society of Surveyors and Civil Engineers. Columbus: Hann & Adair.
Παραπομπή σε μορφή MLA (8th εκδ.)Ohio Society of Surveyors and Civil Engineers. Annual Report of the Ohio Society of Surveyors and Civil Engineers. Hann & Adair.
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