APA (7e ed.) Bronvermelding

Ong, E. D. (2002). RP's language advantage slowly slipping away, notes call center leader. Manila Bulletin.

Chicago (17e ed.) Bronvermelding

Ong, Edison Dy. "RP's Language Advantage Slowly Slipping Away, Notes Call Center Leader." Manila Bulletin 2002.

MLA (9e ed.) Bronvermelding

Ong, Edison Dy. "RP's Language Advantage Slowly Slipping Away, Notes Call Center Leader." Manila Bulletin, 2002.