APA (7th ed.) Citation

Patrick, J. (1980). Opal's million dollar duck. Dramatists Play Service.

Chicago Style (17th ed.) Citation

Patrick, John. Opal's Million Dollar Duck. New York, N.Y. (440 Park Ave. So., New York 10016): Dramatists Play Service, 1980.

MLA (9th ed.) Citation

Patrick, John. Opal's Million Dollar Duck. Dramatists Play Service, 1980.