Nikon D3100 vs Nikon D3200: What is the difference?
Nikon D3100 vs Nikon D3200 Full Comparison - PXLMAG.com
Amazon.com: BM Premium Battery Grip Kit for Nikon D3100 D3200 D3300 D5300 Digital SLR Camera - Includes BG-N12 Battery Grip Replacement + Qty 1 EN-EL14 Battery + Battery Charger : Electronics
Amazon.com : Neewer Professional Vertical Battery Grip Replacement for Nikon D3100/D3200/D3300/D5300 SLR Digital Camera, Works with 1 or 2 Pieces EN-EL14 Batteries : Electronics
Nikon MB-D3100+ for Nikon D3100/D3200/D5300 (with Remote) Battery Grip – Wasabi Power
Official Nikon Hacks, D7000, D7100, D3100, D3200, D5100, V1, V2, J1, D4, D800 and Nikon Tool - Personal View Talks
Nikon D3200 vs. Nikon D3100 « NEW CAMERA
Nikon D3200 DxOMark score: second best APS-C camera ever - Nikon Rumors
Differences between the Nikon D3100 and D3200 - What Digital Camera