- Market Leader 3rd Edition has been completely updated to reflect the fast-changing world of business using authoritative and authentic business sources such as the Financial Times. The 3rd Edition Course Book includes: All new rcase studies with opinions on DVD-ROM from successful consultants who work in the real world of business; All new listening texts reflecting the global nature of business, with interviews that can be viewed on the DVD-ROM. The DVD-ROM oncludes: Vodeo interviews with business experts; All Course Book audio New i-Glossary.