You may not be able to find these authors on iTunes or B&N yet but you can find them here

Jolie Du Pre Benton ~ A Zombie Novel ~ Volume One:  http://ow.ly/xtxkB
Mya A Guardian's Passion: http://ow.ly/xtxvm
Isis Pierce Riding Professor Cox: http://ow.ly/xtxJn
Elvira Bathory Love Story of a Reaper: http://ow.ly/xtxZK