Sportmarketing
  MLA
  Kok, Robert, and Hugo Gruijters. Sportmarketing. 3e [herz.] editie Amsterdam: Pearson, 2013.
  APA
  Kok, R., & Gruijters, H. (2013). Sportmarketing. 3e [herz.] editie Amsterdam: Pearson.
  Chicago
  Kok, Robert, and Hugo Gruijters. Sportmarketing. 3e [herz.] editie Amsterdam: Pearson, 2013.