R. Bertoline Gary. (2009). Graphics Drawing Workbook to accompany Technical Gaphics Communication and Fundamentals of Graphics Communication (Tái bản lần thứ 2.). American: Mc Graw Hill.
শিকাগো স্টাইলে সাইটেশনR. Bertoline Gary. Graphics Drawing Workbook to Accompany Technical Gaphics Communication and Fundamentals of Graphics Communication. Tái bản lần thứ 2. American: Mc Graw Hill, 2009.
এমএলএ সাইটেশনR. Bertoline Gary. Graphics Drawing Workbook to Accompany Technical Gaphics Communication and Fundamentals of Graphics Communication. Tái bản lần thứ 2. American: Mc Graw Hill, 2009.
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