Central Building Research Institute. Annual report 1956-57. Central Building Research Institute.
Cita Chicago (17th ed.)Central Building Research Institute. Annual Report 1956-57. Roorkee: Central Building Research Institute.
Cita MLA (9th ed.)Central Building Research Institute. Annual Report 1956-57. Central Building Research Institute.
Atenció: Aquestes cites poden no estar 100% correctes.