APA-ийн эшлэл(7 дахь хэвлэлт)

Ungerer, M., Pretorius, M., & Herholdt, J. (2011). Viable business strategies: A fieldbook for leaders. Knowres Publishing.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Ungerer, Marius, Maurits Pretorius, ба Johan Herholdt. Viable Business Strategies: A Fieldbook for Leaders. Randburg, Republic of South Africa: Knowres Publishing, 2011.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Ungerer, Marius, et al. Viable Business Strategies: A Fieldbook for Leaders. Knowres Publishing, 2011.