Gert͡sbakh, I. B. (1977). Models of preventive maintenance. North-Holland Pub. Co. ; sole distributor for the U.S. and Canada, American Elsevier.
Lua i Stíl Chicago (17ú heag.)Gert͡sbakh, I. B. Models of Preventive Maintenance. Amsterdam : New York: North-Holland Pub. Co. ; sole distributor for the U.S. and Canada, American Elsevier, 1977.
Lua MLA (8ú heag.)Gert͡sbakh, I. B. Models of Preventive Maintenance. North-Holland Pub. Co. ; sole distributor for the U.S. and Canada, American Elsevier, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.