Ungerer, M., Pretorius, M., & Herholdt, J. (2011). Viable business strategies: A fieldbook for leaders. Knowres Publishing.
芝加哥风格引文Ungerer, Marius, Maurits Pretorius, 与 Johan Herholdt. Viable Business Strategies: A Fieldbook for Leaders. Randburg, Republic of South Africa: Knowres Publishing, 2011.
MLA引文Ungerer, Marius, et al. Viable Business Strategies: A Fieldbook for Leaders. Knowres Publishing, 2011.
警告：这些引文格式不一定是100％准确.