Pollard, M. (1994). Alexander Graham Bell: The story of the invention of the telephone and its effect on out lives. Orient Longman.
শিকাগো স্টাইলে সাইটেশনPollard, Michael. Alexander Graham Bell: The Story of the Invention of the Telephone and Its Effect on Out Lives. Hyderabad: Orient Longman, 1994.
এমএলএ সাইটেশনPollard, Michael. Alexander Graham Bell: The Story of the Invention of the Telephone and Its Effect on Out Lives. Orient Longman, 1994.
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