Gaya APA

DITTMER, P, R., GRIFFIN, G, G. (1997). Dimensions of the Hospitality Industry: an introduction (ed. 2). New York: Van Nostrand Reinhold.

Gaya MLA

DITTMER, Paul, R.., GRIFFIN, Gerald, G.. "Dimensions of the Hospitality Industry: an introduction". ed. 2 New York: Van Nostrand Reinhold, 1997. Text.