Black, D. A. (2015). Ruby programming: The well-grounded Rubyist (2nd ed.). Dreamtech.
Chicago Style (17th ed.) CitationBlack, David A. Ruby Programming: The Well-grounded Rubyist. 2nd ed. New Delhi: Dreamtech, 2015.
MLA (9th ed.) CitationBlack, David A. Ruby Programming: The Well-grounded Rubyist. 2nd ed. Dreamtech, 2015.
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