KOTLER (Philip)/ ARMSTRONG (G.), . (2013). Principles of Marketing. New Delhi: Pearson Education Delhi, Harlow, Singapore.
KOTLER (Philip)/ ARMSTRONG (G.), . 2013. Principles of Marketing. New Delhi: Pearson Education Delhi, Harlow, Singapore.
KOTLER (Philip)/ ARMSTRONG (G.), . Principles of Marketing. New Delhi: Pearson Education Delhi, Harlow, Singapore. 2013.