ebrary, Inc, Goodwin, H., & Font, X. (2012). Progress in responsible tourism. Goodfellow Publishers.
Citazione stile Chigago Style (17a edizione)ebrary, Inc, Harold Goodwin, e Xavier Font. Progress in Responsible Tourism. Woodeaton, Oxford: Goodfellow Publishers, 2012.
Citatione MLA (9a ed.)ebrary, Inc, et al. Progress in Responsible Tourism. Goodfellow Publishers, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.