264245 Bethel, W. (1995). 10 steps to connecting with your customers: Communication skills for selling your products, services and ideas. Chicago, Il. : Darthell.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি264245 Bethel, William. 10 Steps to Connecting with Your Customers: Communication Skills for Selling Your Products, Services and Ideas. Chicago, Il. : Darthell, 1995.
M.L.A (9 ম সংস্করণ) উদ্ধৃতি264245 Bethel, William. 10 Steps to Connecting with Your Customers: Communication Skills for Selling Your Products, Services and Ideas. Chicago, Il. : Darthell, 1995.
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