APA (7th ed.) Citation

Medina, R. G. (1990). Principles of marketing. Rex Book Store.

Chicago Style (17th ed.) Citation

Medina, Roberto G. Principles of Marketing. Manila: Rex Book Store, 1990.

MLA (9th ed.) Citation

Medina, Roberto G. Principles of Marketing. Rex Book Store, 1990.

Warning: These citations may not always be 100% accurate.