Sloan, P., Legrand, W., & Chen, J. S. (2017). Sustainability in the hospitality industry: Principles of sustainable operations (Third edition.). Routledge.
शिकागो स्टाइल उद्धरणSloan, Philip, Willy Legrand, और Joseph S. Chen. Sustainability in the Hospitality Industry: Principles of Sustainable Operations. Third edition. Newyork: Routledge, 2017.
एमएलए उद्धरणSloan, Philip, et al. Sustainability in the Hospitality Industry: Principles of Sustainable Operations. Third edition. Routledge, 2017.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.