Zhechev, Vladimir Sashov, Stanimirov, Evgeni Petrov Loyalty Programs - Specifics, Types, and Benefits for Market Players,
Изд. дом Наука плюс, 2013, с. 28 - 32, 978-5-903063-89-5.
Zhechev, Vladimir Sashov, Stanimirov, Evgeni Petrov .
Loyalty Programs - Specifics, Types, and Benefits for Market Players.
Махачкала: Изд. дом Наука плюс, 2013, с. 28 - 32, 978-5-903063-89-5.
Zhechev, Vladimir Sashov, Stanimirov, Evgeni Petrov (2013)
Loyalty Programs - Specifics, Types, and Benefits for Market Players,
Махачкала: Изд. дом Наука плюс, с. 28 - 32, 978-5-903063-89-5
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