Gaya APA

Legrand, W. et al (2017). Sustainability in the Hospitality Industry: principles of suistainable operations (Third Edition). New York: Routledge.

Gaya MLA

Legrand, Willy. et al. "Sustainability in the Hospitality Industry: principles of suistainable operations". Third Edition New York: Routledge, 2017. BUKU.