Gaya APA

Abell, ., F., D. (1993). Managing With Dual Strategies: Mastering the Present Preempting the Future . Canada: maxwell macmillan international.

Gaya MLA

Abell, ., F., Derek. "Managing With Dual Strategies: Mastering the Present Preempting the Future". Canada: maxwell macmillan international, 1993. Texts.