Cita APA (7th ed.)

DUNGAN, C., & RIDING, D. (1990). Business law. Barron's.

Cita Chicago (17th ed.)

DUNGAN, Christopher, i Donald RIDING. Business Law. New York: Barron's, 1990.

Cita MLA (9th ed.)

DUNGAN, Christopher, i Donald RIDING. Business Law. Barron's, 1990.