Edwards, H. (2006). Creating Passion Brands. Kogan Page India.
Chicago Style aipamenaEdwards, Helen. Creating Passion Brands. New Delhi: Kogan Page India, 2006.
MLA aipamenaEdwards, Helen. Creating Passion Brands. Kogan Page India, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.