APA

Armstrong G. K. P., . (1993). Marketing: An Introduction. : Pearson Education Asia.

Chicago

Armstrong Gary Kotler Philip, . 1993. Marketing: An Introduction. : Pearson Education Asia.

Harvard

Armstrong G. K. P., . (1993). Marketing: An Introduction. : Pearson Education Asia.

MLA

Armstrong Gary Kotler Philip, . Marketing: An Introduction. : Pearson Education Asia. 1993.