Objects
De Koning, Divan, Van Niekerk, Roelf. Nelson Mandela University; 2019. Job satisfaction and workplace stress of public service staff in the Eastern and Western Cape of South Africa.
Van Niekerk, Roelf, Young, Charles. University of Fort Hare; 2010. Psychopathology: PSY 511.
Van Niekerk, Roelf. Rhodes University; 2009. Economic responsiveness in organisational psychology curricula.
Van Niekerk, Roelf. Nelson Mandela University; Psychobiographical perspectives on the development and manifestation of extraordinary human achievements.