Whaley, G. (2001). Etude for percussion quartet. Meredith Music Publications.
Chicago-čujuhus (17. p.)Whaley, Garwood. Etude for Percussion Quartet. Delray Beach: Meredith Music Publications, 2001.
MLA-čujuhus (9. p.)Whaley, Garwood. Etude for Percussion Quartet. Meredith Music Publications, 2001.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.