Cita APA (7th ed.)

Countryman, V., & Kaufman Andrew L. (1971). Commercial law: Cases and materials. Little, Brown.

Cita Chicago (17th ed.)

Countryman, Vern, i Kaufman Andrew L. Commercial Law: Cases and Materials. Boston: Little, Brown, 1971.

Cita MLA (9th ed.)

Countryman, Vern, i Kaufman Andrew L. Commercial Law: Cases and Materials. Little, Brown, 1971.