[9511722, 8187460, 9636949, 9232496, 9637010, 9636950, 9636951, 9232487, 9232488, 9409963, 9232489, 10617542, 9409964, 8187537, 8187538, 9637013, 9409962, 8187539, 10617536, 9637012, 9637011, 10617537, 9808484, 9808480, 9808482, 10617553, 9808483, 9808479, 9808481, 10617552, 9808478, 10617551, 9808485]
Mickey Rapkin
"Pitch Perfect: The Quest for Collegiate A Cappella Glory"
(książka)