In a four- to five-page paper (excluding title page and references page), select one of the management theories in the textbook. Next, explain the elements that are the foundation of the management theory you selected and how the theory identifies the roles and skills of the manager. Additionally, describe three management skills necessary for the effective management of an organization. Outline three management roles in relation to the management of people and organizational processes.   Your paper should include in-text citations and references for at least three scholarly sources, in addition to the course text and be formatted according to APA style