APA (7e ed.) Bronvermelding

Walker, O. C. (2016). Marketing Strategy: A Decision-Focused Approach (7th.). McGraw -Hill.

Chicago (17e ed.) Bronvermelding

Walker, Orville C. Marketing Strategy: A Decision-Focused Approach. 7th. New Delhi: McGraw -Hill, 2016.

MLA (9e ed.) Bronvermelding

Walker, Orville C. Marketing Strategy: A Decision-Focused Approach. 7th. McGraw -Hill, 2016.