SEO books featuring Mark Williams-Cook Mark Williams-Cook has contributed to many books on the subject of search engine optimisation, AI and search, including: SEO in 2026 by Majestic SEO in 2025 by Majestic SEO in 2024 by Majestic The Art of SEO: Mastering Search Engine Optimization by Stephan Spencer, Eric Enge & Jessica Stricchiola SEO in 2023 by Majestic Build a Brand in 30 Days by Simon Middleton