Gary Armstrong & Philip Kotler. (2003). Marketing (Ed-6.). Pearson.
Chicago Edition CitationGary Armstrong i Philip Kotler. Marketing. Ed-6. New Delhi: Pearson, 2003.
Cita MLAGary Armstrong i Philip Kotler. Marketing. Ed-6. Pearson, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.