Hänvisningar gällande denna post

APA-referens

Helmer, R., & Hespanhol, I. (1997). Water Pollution Control: A Guide to the Use of Water Quality Management Principles: Richard Helmer, Ivanildo Hespanhol. Great Britian: St Edmundsbury Press.

Chicago-stil citat

Helmer, Richard, och Ivanildo Hespanhol. Water Pollution Control: A Guide to the Use of Water Quality Management Principles: Richard Helmer, Ivanildo Hespanhol. Great Britian: St Edmundsbury Press, 1997.

MLA-referens

Helmer, Richard, och Ivanildo Hespanhol. Water Pollution Control: A Guide to the Use of Water Quality Management Principles: Richard Helmer, Ivanildo Hespanhol. Great Britian: St Edmundsbury Press, 1997.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.

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