APA (7th ed.) Citation

Seilhamer, G. O. (1968). History of the American theatre / by G.O. Seilhamer. Greenwood.

Chicago Style (17th ed.) Citation

Seilhamer, G. O. History of the American Theatre / by G.O. Seilhamer. Greenwood, 1968.

MLA (9th ed.) Citation

Seilhamer, G. O. History of the American Theatre / by G.O. Seilhamer. Greenwood, 1968.

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