Caves & Roberts. (1975). Regulating the product: Quality and variety. Ballinger.
शिकागो स्टाइल उद्धरणCaves और Roberts. Regulating the Product: Quality and Variety. USA: Ballinger, 1975.
एमएलए उद्धरणCaves और Roberts. Regulating the Product: Quality and Variety. Ballinger, 1975.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.