APA
Singh S., Singh S., . (2018). Customer relationship management. New Delhi # Mumbai: Orange books international # Himalaya Publishing House.
Chicago
Singh Shamsher, Singh Shamsher, . 2018. Customer relationship management. New Delhi # Mumbai: Orange books international # Himalaya Publishing House.
Harvard
Singh S., Singh S., . (2018). Customer relationship management. New Delhi # Mumbai: Orange books international # Himalaya Publishing House.
MLA
Singh Shamsher, Singh Shamsher, . Customer relationship management. New Delhi # Mumbai: Orange books international # Himalaya Publishing House. 2018.