Lua APA (7ú heag.)
Schrenk, M. (2012). Webbots, spiders, and screen scrapers: A guide to developing Internet agents with PHP/CURL (2nd ed.). No Starch Press.
Lua i Stíl Chicago (17ú heag.)
Schrenk, Michael. Webbots, Spiders, and Screen Scrapers: A Guide to Developing Internet Agents with PHP/CURL. 2nd ed. San Francisco: No Starch Press, 2012.
Lua MLA (9ú heag.)
Schrenk, Michael. Webbots, Spiders, and Screen Scrapers: A Guide to Developing Internet Agents with PHP/CURL. 2nd ed. No Starch Press, 2012.
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