Gupta Sunil, Kausar Mohd, Kumar Kamal, Shrivastava H, Mazamdar M, & Canal Ignou soms / Youtube. Product life cycle and marketing strategies.
Čikaški stil citiranja (17. izdanje)Gupta Sunil, Kausar Mohd, Kumar Kamal, Shrivastava H, Mazamdar M, i Canal Ignou soms / Youtube. Product Life Cycle and Marketing Strategies.
MLA način citiranja (9. izdanje)Gupta Sunil, et al. Product Life Cycle and Marketing Strategies.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.