{{cite journal | last1=Dzulhelmi | first1=M. N. | author2=S. Suriyanti | author3=S. Manickam | year=2019 | title=POPULATION, BEHAVIOUR AND CONSERVATION STATUS OF LONG-TAILED MACAQUE, Macaca fascicularis, SOUTHERN PIG-TAILED MACAQUE, Macaca nemestrina IN PAYA BAKAU PARK, PERAK, MALAYSIA | journal=Journal of Animal and Plant Sciences | volume=29 | issue=2 | pages=611-618 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2019-JAPS-233}}