Não informado. (1970). Building Operating Management. Trade Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Building Operating Management. Milwaukee, Wis: Trade Press, 1970.
Lua MLA (8ú heag.)Não informado. Building Operating Management. Trade Press, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.