Obourn, E. S. (1963). Exploring the world of science. D. Van Nostrand.
Chicagoスタイル(17版)引用形式Obourn, Ellsworth Scott. Exploring the World of Science. Princeton: D. Van Nostrand, 1963.
MLA(9版)引用形式Obourn, Ellsworth Scott. Exploring the World of Science. D. Van Nostrand, 1963.
警告: この引用は必ずしも正確ではありません.