APA (7th ed.) Citation

Roberts, K. (1999). Nine new rules for chief executives [series]. Philippine Daily Inquirer.

Chicago Style (17th ed.) Citation

Roberts, Kevin. "Nine New Rules for Chief Executives [series]." Philippine Daily Inquirer 1999.

MLA (9th ed.) Citation

Roberts, Kevin. "Nine New Rules for Chief Executives [series]." Philippine Daily Inquirer, 1999.

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