Pugh, S. (2009). Wicked cool Ruby scripts: Useful scripts that solve difficult problems. No Starch Press.
Citace podle Chicago (17th ed.)Pugh, Steve. Wicked Cool Ruby Scripts: Useful Scripts That Solve Difficult Problems. San Francisco: No Starch Press, 2009.
Citace podle MLA (9th ed.)Pugh, Steve. Wicked Cool Ruby Scripts: Useful Scripts That Solve Difficult Problems. No Starch Press, 2009.
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