YESASIA: EXO Vol. 3 - Ex'act (Korean + Chinese Version) (Lucky One + Monster Version) (4-Album) CD - EXO, SM Entertainment - Korean Music - Free Shipping
Monster (Exo song) - Wikipedia
EX'ACT Review - 24HR KPOP-TV Entertainment Network
EXO Praised For Their Eye-Catching “Monster” And “Lucky One” Performances | Soompi