Co, S. L. The St. Luke's hospital formulary system. Journal of the Philippine Pharmaceutical Association.
Chicago Style (17th ed.) CitationCo, Siopin L. "The St. Luke's Hospital Formulary System." Journal of the Philippine Pharmaceutical Association .
MLA (9th ed.) CitationCo, Siopin L. "The St. Luke's Hospital Formulary System." Journal of the Philippine Pharmaceutical Association, .
Warning: These citations may not always be 100% accurate.