D E James & M A Jansen. (1978). Ecnomic Approaches to Environmental Problems. Elsevier scientific publishing company.
Chicago Edition CitationD E James and M A Jansen. Ecnomic Approaches to Environmental Problems. Elsevier scientific publishing company, 1978.
MLA Edition CitationD E James and M A Jansen. Ecnomic Approaches to Environmental Problems. Elsevier scientific publishing company, 1978.
Warning: These citations may not always be 100% accurate.