APA (7e ed.) Bronvermelding

Legrand, W., Sloan, P., & Chen, J. S. (2017). Sustainability in the hospitality industry: Principles of sustainable operations (Third edition.). Routledge.

Chicago (17e ed.) Bronvermelding

Legrand, Willy, Philip Sloan, en Joseph S. Chen. Sustainability in the Hospitality Industry: Principles of Sustainable Operations. Third edition. Londo: Routledge, 2017.

MLA (9e ed.) Bronvermelding

Legrand, Willy, et al. Sustainability in the Hospitality Industry: Principles of Sustainable Operations. Third edition. Routledge, 2017.