APA Style

Maxwell, J, C. (2021). The 5 levels of leadership: proven steps to maximize your potential/ John C. Maxwell (Cet.1). California: Hachete Book Group.

MLA Style

Maxwell, John, C.. "The 5 levels of leadership: proven steps to maximize your potential/ John C. Maxwell". Cet.1 California: Hachete Book Group, 2021. Text.