APA-referens (7:e uppl.)

British Standards Institution. (1970). Method for Rockwell superficial hardness test (N and T scales). British Standards Institution.

Chicago-referens (17:e uppl.)

British Standards Institution. Method for Rockwell Superficial Hardness Test (N and T Scales). London: British Standards Institution, 1970.

MLA-referens (8:e uppl.)

British Standards Institution. Method for Rockwell Superficial Hardness Test (N and T Scales). British Standards Institution, 1970.

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