APA (7th ed.) Citation

Rodgers, R., & Hammerstein, O., II. (1943). Oklahoma! Random House.

Chicago Style (17th ed.) Citation

Rodgers, Richard, and Oscar Hammerstein, II. Oklahoma! New York: Random House, 1943.

MLA (9th ed.) Citation

Rodgers, Richard, and Oscar Hammerstein, II. Oklahoma! Random House, 1943.