อ้างอิง ของ ควากกา

  1. ↑ Hack, M. A.; East, R.; Rubenstein, D. I. (2008). Equus quagga quagga. In: IUCN 2008. IUCN Red List of Threatened Species. Downloaded on 5 January 2008.
  2. ↑ Max, D.T. (2006-01-01). "Can You Revive an Extinct Animal?". New York Times Magazine. สืบค้นเมื่อ 2010-08-25.
  3. ↑ doi:10.1098/rsbl.2005.0323
    This citation will be automatically completed in the next few minutes. You can jump the queue or expand by hand