Death Penalty Information Center

a b Death Penalty Information Center>Federal Death Penalty ^ a b Death Penalty Information Center>Federal Executions 1927-2003 ^ a b Death Penalty Information

^ Death Penalty Information Center>Fact>States With and Without the Death Penalty ^ Death Penalty Information Center>Resources>State by

朝日新聞2010年4月7日朝刊 ^ a b Death Penalty Information Center＞Facts about The Death Penalty (PDF) ^ Death Penalty Information Center. “Racial Demographics”

2023年3月11日閲覧。  ^ Death Penalty Information Center＞Facts about The Death Penalty ^ Death Penalty Information Center. “Racial Demographics”. 2022年4月4日閲覧。

改心なら減刑か、制度是非論再び（解説）」（読売新聞東京本社 ロサンゼルス支局：河野博子） ^ Death Penalty Information Center>Fact>Death Row ^ a b Death Penalty Information Center>DEATH ROW>Women ^ EXECUTIONS OVERVIEW　Executions