Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.