<sod>* {{wikicite|ref={{harvid|Nordin|2004}}|reference=Nordin, Ingvar Loco. 2004. "[http://home.swipnet.se/sonoloco18/mode/makrokosmos.html George Crumb, ''Makrokosmos'' Books 1 and 2: 24 Fantasy Pieces after the Zodiac for Amplified Piano: Margaret Leng Tan (amplified piano)—Alex Nowitz (whistling). Mode 142]{{dead link|date=March 2016}}". (Accessed 7 April 2008) Also found at [http://www.moderecords.com/catalog/142crumb.html Mode Records website].}}<eod>
<sod>* {{wikicite|ref={{harvid|Nordin|2004}}|reference=Nordin, Ingvar Loco. 2004. "[http://www.sonoloco.com/rev/mode/modeframes.html George Crumb, ''Makrokosmos'' Books 1 and 2: 24 Fantasy Pieces after the Zodiac for Amplified Piano: Margaret Leng Tan (amplified piano)—Alex Nowitz (whistling). Mode 142]". (Accessed 7 April 2008) Also found at [http://www.moderecords.com/catalog/142crumb.html Mode Records website].}}<eod>