«John Barrowman interview 2007 – Radio Times, June 2007». Radio Times. Arxivat de l'original el 16 maig 2008. [Consulta: 11 setembre 2009]. «It’s not the Captain Jack from Torchwood. He’s not angsty, he’s not moody; he’s determined, but in a different way. Captain Jack from Doctor Who is a little more light-hearted, because he’s back where he wants to be.»
«John Barrowman interview 2007 – Radio Times, June 2007». Radio Times. Arxivat de l'original el 16 maig 2008. [Consulta: 11 setembre 2009]. «It’s not the Captain Jack from Torchwood. He’s not angsty, he’s not moody; he’s determined, but in a different way. Captain Jack from Doctor Who is a little more light-hearted, because he’s back where he wants to be.»
«Feature: Torchwood; Divided Loyalties». Starburst. Arxivat de l'original el 13 de febrer 2012. [Consulta: 20 gener 2008]. «He is probably back to his normal self now, which is, he’s still got some darkness, but he’s got a humour back. He’s got his one-liners, he finds the humour in a situation, and he’s quick to point that out to people. So yes, he’s a different Jack, but he’s come back as the Jack that we first knew and loved from Doctor Who.»
«Feature: Torchwood; Divided Loyalties». Starburst. Arxivat de l'original el 13 de febrer 2012. [Consulta: 20 gener 2008]. «He is probably back to his normal self now, which is, he’s still got some darkness, but he’s got a humour back. He’s got his one-liners, he finds the humour in a situation, and he’s quick to point that out to people. So yes, he’s a different Jack, but he’s come back as the Jack that we first knew and loved from Doctor Who.»