Gaya APA

Biswas, A., Davenport, W. (1976). Extractive metallurgy of copper. (1976). : Oxford : Pergamon Press,.

Gaya MLA

Biswas, A.K.., Davenport, W.G.. "Extractive metallurgy of copper.". 1976 : Oxford : Pergamon Press,, 1976. Text.