APA Citation

Heiss, E. D. 1., Obourn, E. S., & Hoffman, C. W. (1940). Modern methods and materials for teaching science. New York: The Macmillan company.

Chicago Style Citation

Heiss, Elwood D. 1899-, Ellsworth Scott Obourn, and Charles Wesley Hoffman. Modern Methods and Materials for Teaching Science. New York: The Macmillan company, 1940.

MLA Citation

Heiss, Elwood D. 1899-, Ellsworth Scott Obourn, and Charles Wesley Hoffman. Modern Methods and Materials for Teaching Science. New York: The Macmillan company, 1940.

Warning: These citations may not always be 100% accurate.