APA (7th ed.) Citation

Wellershoff, D., & Oppenheimer, D. (1972). A beautiful day (1st U.S. ed.). Harper & Row.

Chicago Style (17th ed.) Citation

Wellershoff, Dieter, and Dorothea Oppenheimer. A Beautiful Day. 1st U.S. ed. New York, N.Y.: Harper & Row, 1972.

MLA (8th ed.) Citation

Wellershoff, Dieter, and Dorothea Oppenheimer. A Beautiful Day. 1st U.S. ed. Harper & Row, 1972.