Central Building Research Institute. Annual report 1956-57. Central Building Research Institute.
Chicago-referens (17:e uppl.)Central Building Research Institute. Annual Report 1956-57. Roorkee: Central Building Research Institute.
MLA-referens (9:e uppl.)Central Building Research Institute. Annual Report 1956-57. Central Building Research Institute.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.