deb-src http://packages.linuxmint.com/ petra main upstream import backport
 
deb-src http://extra.linuxmint.com petra main
 
deb-src http://ubuntu.securedservers.com/ saucy main restricted universe multiverse
deb-src http://ubuntu.securedservers.com/ saucy-updates main restricted universe multiverse
 
deb-src http://security.ubuntu.com/ubuntu/ saucy-security main restricted universe multiverse
deb-src http://archive.canonical.com/ubuntu/ saucy partner