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