Gaya APA
Ervin, J., Viana, V, M. (1996).
Certification of Forest Products: Issues and Perspectives .
Washington D.C:
Island Press.
Gaya MLA
Ervin, Jamison., Viana, Virgilio, M.
"Certification of Forest Products: Issues and Perspectives".
Washington D.C:
Island Press,
1996.
Text.