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| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| E=MC² (CD, Album) | Island Def Jam Music Group | GE0103C | China | 2008 | |
| E=MC² (2xLP, Album) | Island Records | B0010272-01 | US | 2008 | |
| E=MC² (CD, Album) | Island Def Jam Music Group | 1767180 | Australia | 2008 | |
| E=MC² (CD, Album) | Island Def Jam Music Group | 602517507586 | Europe | 2008 | |
| E=MC² (CD, Album) | Island Def Jam Music Group, Universal Music (Canada) | B001027202 | Canada | 2008 | |
| E=MC² (CD, Album, Enh) | Universal | UICL-9068 | Japan | 2008 | |
| E=MC² (CD, Album, Ltd, Dig) | Island Def Jam Music Group | 1767179 | UK & Europe | 2008 | |
| E=MC² (CD, Album, Sup) | Mercury | 1767180 | Europe | 2008 | |
| E=MC² (Cass, Album) | Island Records | 176 889-3 | Indonesia | 2008 |