1.
A large focus of naturally acquired Plasmodium knowlesi infections in human beings
by Singh, Balbir
The Lancet (British edition), 2004, Vol.363 (9414), p.1017-1024

2.
Molecular Epidemiological Investigation of Plasmodium knowlesi in Humans and Macaques in Singapore
by Jeslyn, Wong Pei Sze
Vector borne and zoonotic diseases (Larchmont, N.Y.), 2011-02-01, Vol.11 (2), p.131-135
