APA (7th ed.) Citation

Heywood, J. (1970). The play called the Four PP. [AMS Press].

Chicago Style (17th ed.) Citation

Heywood, John. The Play Called the Four PP. [New York]: [AMS Press], 1970.

MLA (9th ed.) Citation

Heywood, John. The Play Called the Four PP. [AMS Press], 1970.