British Standards Institution. (1981). Specification for classification and marking of cattle hides and calfskins (2nd revision.). B.S.I..
Citación estilo ChicagoBritish Standards Institution. Specification for Classification and Marking of Cattle Hides and Calfskins. 2nd revision. London: B.S.I., 1981.
Cita MLABritish Standards Institution. Specification for Classification and Marking of Cattle Hides and Calfskins. 2nd revision. B.S.I., 1981.
Warning: These citations may not always be 100% accurate.