APA (7e ed.) Bronvermelding

Walker, G., & Madsen, T. L. (2016). Modern competitive strategy (Fourth edition.). McGraw-Hill Education.

Chicago (17e ed.) Bronvermelding

Walker, Gordon, en Tammy L. Madsen. Modern Competitive Strategy. Fourth edition. New York, NY: McGraw-Hill Education, 2016.

MLA (9e ed.) Bronvermelding

Walker, Gordon, en Tammy L. Madsen. Modern Competitive Strategy. Fourth edition. McGraw-Hill Education, 2016.