APA (7th ed.) Citation

Summers, R. S., & Hillman, R. A. (1987). Contract and related obligation: Theory, doctrine and practice. West Publishing Co.

Chicago Style (17th ed.) Citation

Summers, Robert S., and Robert A. Hillman. Contract and Related Obligation: Theory, Doctrine and Practice. St. Paul, Minn: West Publishing Co, 1987.

MLA (9th ed.) Citation

Summers, Robert S., and Robert A. Hillman. Contract and Related Obligation: Theory, Doctrine and Practice. West Publishing Co, 1987.