Gaya APA
Nurtjahjani, F., Permatasari, I, R. (2019).
Customer relationship management dan praktek .
Malang:
Polinema Press.
Gaya MLA
Nurtjahjani, Fullchis., Permatasari, Ita, Rifiani.
"Customer relationship management dan praktek".
Malang:
Polinema Press,
2019.
Text.