Caves & Roberts. (1975). Regulating the product: Quality and variety. Ballinger.
Chicago Edition CitationCaves i Roberts. Regulating the Product: Quality and Variety. USA: Ballinger, 1975.
Cita MLACaves i Roberts. Regulating the Product: Quality and Variety. Ballinger, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.