Indian Standards Institution. (1966). Indian Standard : Methods of Test for Vulcanized Rubbers: : Part II - Hardness. Indian Standards Institution.
Trích dẫn kiểu ChicagoIndian Standards Institution. Indian Standard : Methods of Test for Vulcanized Rubbers: : Part II - Hardness. N.Delhi: Indian Standards Institution, 1966.
Trích dẫn MLAIndian Standards Institution. Indian Standard : Methods of Test for Vulcanized Rubbers: : Part II - Hardness. Indian Standards Institution, 1966.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.