Köcher, S. (2015). The Paradox of Points: Theoretical Foundation and Empirical Evidence of Medium Magnitude Effects in Loyalty Programs. Springer.
Chicago-tyylinen lähdeviittausKöcher, Sören. The Paradox of Points: Theoretical Foundation and Empirical Evidence of Medium Magnitude Effects in Loyalty Programs. Springer, 2015.
MLA-viiteKöcher, Sören. The Paradox of Points: Theoretical Foundation and Empirical Evidence of Medium Magnitude Effects in Loyalty Programs. Springer, 2015.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.