APA (7th ed.) Citation

Riggs, A. S. (1942). The romance of human progress (Forum books ed.). World Pub. Co..

Chicago Style (17th ed.) Citation

Riggs, Arthur Stanley. The Romance of Human Progress. Forum books ed. Cleveland: World Pub. Co., 1942.

MLA (9th ed.) Citation

Riggs, Arthur Stanley. The Romance of Human Progress. Forum books ed. World Pub. Co., 1942.