APA način citiranja (7. izdanje)
Opperman, C., & Villiers, M. d. (2015). Determine the true value of learning and development. Knowres Publishing.
Čikaški stil citiranja (17. izdanje)
Opperman, Catherina, i Marlene de Villiers. Determine the True Value of Learning and Development. Randburg, South Africa: Knowres Publishing, 2015.
MLA način citiranja (9. izdanje)
Opperman, Catherina, i Marlene de Villiers. Determine the True Value of Learning and Development. Knowres Publishing, 2015.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.