Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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