(2006). Heptachlor. WHO.
Chicago Style (17th ed.) CitationHeptachlor. Ginebra: WHO, 2006.
MLA (9th ed.) CitationHeptachlor. WHO, 2006.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.
(2006). Heptachlor. WHO.
Chicago Style (17th ed.) CitationHeptachlor. Ginebra: WHO, 2006.
MLA (9th ed.) CitationHeptachlor. WHO, 2006.