(1985). Petro chemical industry. Paris: OCDE.
Trích dẫn kiểu ChicagoPetro Chemical Industry. Paris: OCDE, 1985.
MLA CitationPetro Chemical Industry. Paris: OCDE, 1985.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.
(1985). Petro chemical industry. Paris: OCDE.
Trích dẫn kiểu ChicagoPetro Chemical Industry. Paris: OCDE, 1985.
MLA CitationPetro Chemical Industry. Paris: OCDE, 1985.