Environmental Portection. 2009年7月22日閲覧。 ^ “Crawford Announces Destruction Of AfricanBee Hive”. Florida Department of Agriculture and Consumer Services. 2009年7月22日閲覧。
years of trophy hunting records illustrate for hunted African elephant and bovid populations”. African Journal of Ecology 52 (2): 250-253. doi:10.1111/aje