Gaya APA
Nicouland, G, H, N, F, P, D, B. (2008).
Marketing Strategy and Competitive Positioning .
Inggris:
Prentice Hall.
Gaya MLA
Nicouland, Graham, Hooley,, Nigel, F., Piercy, Dan, Brigitte.
"Marketing Strategy and Competitive Positioning".
Inggris:
Prentice Hall,
2008.
Text.