Obourn, E. S. (1958). Activities in science: Workbook to accompany science in everyday life (2nd edition.). D. Van Nostrand Co.
芝加哥风格引文Obourn, Ellsworth S. Activities in Science: Workbook to Accompany Science in Everyday Life. 2nd edition. Princeton, New Jersey: D. Van Nostrand Co, 1958.
MLA引文Obourn, Ellsworth S. Activities in Science: Workbook to Accompany Science in Everyday Life. 2nd edition. D. Van Nostrand Co, 1958.
警告：这些引文格式不一定是100％准确.