Lisa Sabin-Wilson, WordPress All-in-One For Dummies (For Dummies (Computers) 3rd Edition, For Dummies; 3 edition, (ISBN978-1119327776, lire en ligne), p.429
Kristopher Jones, Search Engine Optimization: Your Visual Blueprint for Effective Internet Marketing 3rd Edition, Visual; 3 edition, (ISBN978-1118551745, lire en ligne), p.21
Eric Enge, The Art of SEO: Mastering Search Engine Optimization, O'Reilly Media; 3 edition, (ISBN978-1491948965, lire en ligne)
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