APA ציטוט

Obourn, E. S. (1963). Discovering the world of science. D. Van Nostrand.

Chicago Style (17th ed.) Citation

Obourn, Ellsworth S. Discovering the World of Science. Princeton, NJ: D. Van Nostrand, 1963.

ציטוט MLA

Obourn, Ellsworth S. Discovering the World of Science. D. Van Nostrand, 1963.