APA (7th ed.) Citation

Steidle, E. (1948). Roots of human progress. School of Mineral Industries.

Chicago Style (17th ed.) Citation

Steidle, Edward. Roots of Human Progress. State College: School of Mineral Industries, 1948.

MLA (9th ed.) Citation

Steidle, Edward. Roots of Human Progress. School of Mineral Industries, 1948.

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