APA (7th ed.) Citation

David, R. S. (2016). Understanding the 4Ps. Philippine Daily Inquirer.

Chicago Style (17th ed.) Citation

David, Randolf S. "Understanding the 4Ps." Philippine Daily Inquirer 2016.

MLA (9th ed.) Citation

David, Randolf S. "Understanding the 4Ps." Philippine Daily Inquirer, 2016.

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