APA-čujuhus (7. p.)

Havaldar, K. K. (2014). Business Marketing. Penguin Group.

Chicago-čujuhus (17. p.)

Havaldar, Krishna K. Business Marketing. NewYork: Penguin Group, 2014.

MLA-čujuhus (9. p.)

Havaldar, Krishna K. Business Marketing. Penguin Group, 2014.

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