Songs on Itunes that say "Album Only"

When a song says "Album Only" next to it instead of "Buy Song," does that mean that you have to purchase the entire album on Itunes OR does it mean you have to purchase the album in stores to get those particular songs?

To be specific, I am referring to Jordin Sparks' album. There are three songs that you can't buy individually because they say "Album Only." So I looked on bestbuy.com and those songs aren't on the CD that they are selling on there. So is it just through Itunes that I can get those three extra songs, when I buy the entire album?

Thanks for your help.