Journal Article
Okal, Jerry, Henry F Raymond, Waimar Tun, Helgar Musyoki, Sufia Dadabhai, Dita Broz, Joan Nyamu, David Kuria, Nicholas Muraguri, and Scott Geibel.
"Lessons learned from respondent-driven sampling recruitment in Nairobi: experiences from the field." BMC Research Notes 9, no. 1 (2016): 158.