APA (7. basım) Alıntı
Opperman, C., & Villiers, M. d. (2015). Determine the true value of learning and development. Knowres Publishing.
Chicago Style (17. basım) Atıf
Opperman, Catherina, ve Marlene de Villiers. Determine the True Value of Learning and Development. Randburg, South Africa: Knowres Publishing, 2015.
MLA (9th ed.) Atıf
Opperman, Catherina, ve Marlene de Villiers. Determine the True Value of Learning and Development. Knowres Publishing, 2015.
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