Obourn, E. S. (1963). Discovering the world of science. D. Van Nostrand.
芝加哥风格引文Obourn, Ellsworth S. Discovering the World of Science. Princeton, NJ: D. Van Nostrand, 1963.
MLA引文Obourn, Ellsworth S. Discovering the World of Science. D. Van Nostrand, 1963.
警告：这些引文格式不一定是100％准确.