APA (7e ed.) Bronvermelding

Siu, R. C. S. (2019). Economic principles for the hospitality industry (First edition.). Routledge.

Chicago (17e ed.) Bronvermelding

Siu, Ricardo Chi Sen. Economic Principles for the Hospitality Industry. First edition. Abingdon, Oxon: Routledge, 2019.

MLA (9e ed.) Bronvermelding

Siu, Ricardo Chi Sen. Economic Principles for the Hospitality Industry. First edition. Routledge, 2019.

Let op: Deze citaties zijn niet altijd 100% accuraat.