David Busch's Canon EOS 6D Guide to Digital SLR Photography (David Busch's Digital Photography Guides)
David Busch's Compact Field Guide for the Canon EOS 6D (David Busch's Digital Photography Guides)
Canon EOS 6D For Dummies
Canon EOS 6D 20.2 MP CMOS Digital SLR Camera with 3.0-Inch LCD (Body Only) - Wi-Fi Enabled
Canon EOS 6D: From Snapshots to Great Shots