Gaya APA

Nykiel, R, A. (2007). Handbook of Marketing Research Methodologies for Hospitality and Tourism . New York: the Haworth Hospitality & Tourism Press.

Gaya MLA

Nykiel, Ronald, A.. "Handbook of Marketing Research Methodologies for Hospitality and Tourism". New York: the Haworth Hospitality & Tourism Press, 2007. BUKU.