Gaya APA

Carson, B, L., Smith, I, C. (1981). Trace Metals in The Environment, Vol 6; Cobalt, Ru Appraisal of Environment Ecpature. . Michigan: .

Gaya MLA

Carson, Bonnie., L.., Smith, Ivan, C. "Trace Metals in The Environment, Vol 6; Cobalt, Ru Appraisal of Environment Ecpature.". Michigan: , 1981. Text.