APA (7th ed.) Citation

(1921). World War through the stereoscope. Keystone View Co..

Chicago Style (17th ed.) Citation

World War Through the Stereoscope. [Meadville, Pennsylvania]: Keystone View Co., 1921.

MLA (9th ed.) Citation

World War Through the Stereoscope. Keystone View Co., 1921.

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