Open Universityearth's Physical Resources Course Team & Open University, E. P. (1974). Implications. Open university press.
Chicago Edition CitationOpen Universityearth's Physical Resources Course Team and Earth's Physic Open University. Implications. Open university press, 1974.
MLA引文Open Universityearth's Physical Resources Course Team and Earth's Physic Open University. Implications. Open university press, 1974.
警告：這些引文格式不一定是100％准確.