American playwrights on drama (4th pr.) / ed. Horst Frenz.

MLA

Frenz, Horst. American Playwrights On Drama (4th Pr.) / Ed. Horst Frenz. New York, N.Y, 1968.

APA

Frenz, H. (1968). American playwrights on drama (4th pr.) / ed. Horst Frenz. New York, N.Y.

Chicago

Frenz, Horst American Playwrights On Drama (4th Pr.) / Ed. Horst Frenz. New York, N.Y., 1968.