Ohio Society of Surveyors and Civil Engineers. Annual report of the Ohio Society of Surveyors and Civil Engineers. Hann & Adair.
Lua i Stíl Chicago (17ú heag.)Ohio Society of Surveyors and Civil Engineers. Annual Report of the Ohio Society of Surveyors and Civil Engineers. Columbus: Hann & Adair.
Lua MLA (8ú heag.)Ohio Society of Surveyors and Civil Engineers. Annual Report of the Ohio Society of Surveyors and Civil Engineers. Hann & Adair.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.