(1985). Petro chemical industry. Paris: OCDE.
Trích dẫn kiểu ChicagoPetro Chemical Industry. Paris: OCDE, 1985.
MLA引文Petro Chemical Industry. Paris: OCDE, 1985.
警告:這些引文格式不一定是100%准確.
(1985). Petro chemical industry. Paris: OCDE.
Trích dẫn kiểu ChicagoPetro Chemical Industry. Paris: OCDE, 1985.
MLA引文Petro Chemical Industry. Paris: OCDE, 1985.