APA (7th ed.) Citation

Greenwood, G. G. (1970). The Shakespeare problem restated. Greenwood Press.

Chicago Style (17th ed.) Citation

Greenwood, G. G. The Shakespeare Problem Restated. Westport, Conn.: Greenwood Press, 1970.

MLA (9th ed.) Citation

Greenwood, G. G. The Shakespeare Problem Restated. Greenwood Press, 1970.