Gaya APA
Kumar, V.. (2012).
Customer relationship management .
New York:
Springer.
Gaya Chicago
Kumar, V..
Customer relationship management.
New York:
Springer,
2012.
Buku.
Gaya MLA
Kumar, V..
Customer relationship management.
New York:
Springer,
2012.
Buku.
Gaya Turabian
Kumar, V..
Customer relationship management.
New York:
Springer,
2012.
Buku.