APA (7th ed.) Citation

Caldwell, O. W., & Curtis, F. D. (1936). Science for today. Ginn and company.

Chicago Style (17th ed.) Citation

Caldwell, Otis W., and Francis D. Curtis. Science for Today. Boston, New York [etc.]: Ginn and company, 1936.

MLA (9th ed.) Citation

Caldwell, Otis W., and Francis D. Curtis. Science for Today. Ginn and company, 1936.