OPPENHEIM, S. C. . e. a. (1983). Unfair trade practices and consumer protection: Casesand comments.-- Ed.4. West.

OPPENHEIM, S. Chesterfield et al. Unfair Trade Practices and Consumer Protection: Casesand Comments.-- Ed.4. ST. Paul: West, 1983.

OPPENHEIM, S. Chesterfield et al. Unfair Trade Practices and Consumer Protection: Casesand Comments.-- Ed.4. West, 1983.