Roberto, D. N. Do we prioritize blue ocean marketing over red ocean marketing? Philippine Daily Inquirer.
Čikaški stil citiranja (17. izdanje)Roberto, Dr. Ned. "Do We Prioritize Blue Ocean Marketing over Red Ocean Marketing?" Philippine Daily Inquirer .
MLA način citiranja (9. izdanje)Roberto, Dr. Ned. "Do We Prioritize Blue Ocean Marketing over Red Ocean Marketing?" Philippine Daily Inquirer, .
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