Dyfyniad APA
Powers, T. (1990). Marketing hospitality (1a. ed.). Wiley Service Management Series.
Dyfyniad Arddull Chicago
Powers, Tom. Marketing Hospitality. 1a. ed. USA: Wiley Service Management Series, 1990.
Dyfyniad MLA
Powers, Tom. Marketing Hospitality. 1a. ed. Wiley Service Management Series, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.