Roberts, P. (1995). Environmentally sustainable business: A local and regional perspective. P. Chapman.
Chicago-viite (17. p.)Roberts, Peter. Environmentally Sustainable Business: A Local and Regional Perspective. London: P. Chapman, 1995.
MLA-viite (9. p.)Roberts, Peter. Environmentally Sustainable Business: A Local and Regional Perspective. P. Chapman, 1995.
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