Heru Yulianto, Dyah Palupiningtyas, and Ray Octafian. 2021. “MANAJEMEN STRATEGI : Suatu Konsep, Teknik Dan Implementasinya”. BADAN PENERBIT STIEPARI PRESS, February, 1-254. https://badanpenerbit.stiepari.org/index.php/stieparipress/article/view/125.