Gaya APA

Blatberg, R, G., YENTI/2017010462124, P, Y, F. (2001). Customer equity: building and managing relationship as valuabe assets (1). USA: .

Gaya MLA

Blatberg, Robert, G., YENTI/2017010462124, PRIMA, YUDDY, FEBRIDA. "Customer equity: building and managing relationship as valuabe assets". 1 USA: , 2001. Text.