Cita APA (7a ed.)

Richards, P. (2019). Law of contract (Fourteenth edition.). Pearson.

Cita Chicago Style (17a ed.)

Richards, Paul. Law of Contract. Fourteenth edition. Harlow, England: Pearson, 2019.

Cita MLA (8a ed.)

Richards, Paul. Law of Contract. Fourteenth edition. Pearson, 2019.