Robert J. Christopher. (2007). Internatinal business (In lần thứ 1.). American: MC Graw Hill.
শিকাগো স্টাইলে সাইটেশনRobert J. Christopher. Internatinal Business. In lần thứ 1. American: MC Graw Hill, 2007.
এমএলএ সাইটেশনRobert J. Christopher. Internatinal Business. In lần thứ 1. American: MC Graw Hill, 2007.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.