KOTLER (Philip)/ ARMSTRONG (G.), . (2007). Principles of Marketing. : Pearson Education Delhi, Harlow, Singapore.
KOTLER (Philip)/ ARMSTRONG (G.), . 2007. Principles of Marketing. : Pearson Education Delhi, Harlow, Singapore.
KOTLER (Philip)/ ARMSTRONG (G.), . Principles of Marketing. : Pearson Education Delhi, Harlow, Singapore. 2007.