Ong, R. (2017). Philippine bonsai group, BSAP joining hortikultura 2018. IN Philippine Gardens [column]. Philippine Star.
Chicago (17e ed.) BronvermeldingOng, Ray. "Philippine Bonsai Group, BSAP Joining Hortikultura 2018. IN Philippine Gardens [column]." Philippine Star 2017.
MLA (9e ed.) BronvermeldingOng, Ray. "Philippine Bonsai Group, BSAP Joining Hortikultura 2018. IN Philippine Gardens [column]." Philippine Star, 2017.
Let op: Deze citaties zijn niet altijd 100% accuraat.