GOPALAKRISHAN D, . (2001). ELECTRONIC MARKETING IN 21st CENTURY. MUMBAI: HIMALAYA PUBLISHING HOUSE.
GOPALAKRISHAN D, . 2001. ELECTRONIC MARKETING IN 21st CENTURY. MUMBAI: HIMALAYA PUBLISHING HOUSE.
GOPALAKRISHAN D, . ELECTRONIC MARKETING IN 21st CENTURY. MUMBAI: HIMALAYA PUBLISHING HOUSE. 2001.