Lua APA (7ú heag.)

Kalt, N. (1971). Introduction to the hospitality industry. Bobbs-Merrill.

Lua i Stíl Chicago (17ú heag.)

Kalt, Nathan. Introduction to the Hospitality Industry. Indianapolis: Bobbs-Merrill, 1971.

Lua MLA (8ú heag.)

Kalt, Nathan. Introduction to the Hospitality Industry. Bobbs-Merrill, 1971.

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