How do you get money out of the bank in World of Warcraft

You cant put money into your own personal bank. You might be talking about the Guild bank. Some guilds your in wont let you take money or items out. But if you are able to there should be a button on the lower right of the menu that would pop up if you click your guild bank it will say Withdraw if you cant take money out it should be grayed out. The guild bank is in Stormwind near the Auction house should be a sign above the place its at.