(2003). PPA Memorandum Circular No.31-2003: Guidelines, documentation and procedures on container transfers under shipping line's custody. Philippine Star.
Chicago Style (17th ed.) Citation"PPA Memorandum Circular No.31-2003: Guidelines, Documentation and Procedures on Container Transfers Under Shipping Line's Custody." Philippine Star 2003.
MLA (9th ed.) Citation"PPA Memorandum Circular No.31-2003: Guidelines, Documentation and Procedures on Container Transfers Under Shipping Line's Custody." Philippine Star, 2003.
Warning: These citations may not always be 100% accurate.