APA

Gassner J., . (1957). Twenty best European plays on the American stage. New York: Crown Publishers.

Chicago

Gassner John, . 1957. Twenty best European plays on the American stage. New York: Crown Publishers.

Harvard

Gassner J., . (1957). Twenty best European plays on the American stage. New York: Crown Publishers.

MLA

Gassner John, . Twenty best European plays on the American stage. New York: Crown Publishers. 1957.