APA (7th ed.) Citation

Frost, R., Schmidt, G. D., & Sorensen, H. (1994). Robert Frost (A Magnolia eds. bk.). Sterling.

Chicago Style (17th ed.) Citation

Frost, Robert, Gary D. Schmidt, and Henri Sorensen. Robert Frost. A Magnolia eds. bk. New York: Sterling, 1994.

MLA (9th ed.) Citation

Frost, Robert, et al. Robert Frost. A Magnolia eds. bk. Sterling, 1994.