APA (7th ed.) Citation

Ellfeldt, L., & Morton, V. L. (1974). This is ballroom dance. National Press Books.

Chicago Style (17th ed.) Citation

Ellfeldt, Lois, and Virgil L. Morton. This Is Ballroom Dance. Palo Alto, Calif.: National Press Books, 1974.

MLA (9th ed.) Citation

Ellfeldt, Lois, and Virgil L. Morton. This Is Ballroom Dance. National Press Books, 1974.