Hassanien, A., Dale, C., & Clarke, A. (2010). Hospitality business development. Butterworth-Heinemann/Elsevier.
Citazione stile Chigago Style (17a edizione)Hassanien, Ahmed, Crispin Dale, e Alan Clarke. Hospitality Business Development. Amsterdam: Butterworth-Heinemann/Elsevier, 2010.
Citatione MLA (9a ed.)Hassanien, Ahmed, et al. Hospitality Business Development. Butterworth-Heinemann/Elsevier, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.