HeavenGames. «Ensemble Studios Chat 16Oct97» (en anglès). Arxivat de l'original el 2006-11-11. [Consulta: 16 juny 2012]. «The music was actually done by my two brothers,[…] They did a ton of research on the cultures, their styles, and their instruments..»
The San Francisco Chronicle. «Game news: Microsoft to close 'Halo Wars' studio» (en anglès). Lou Kesten. [Consulta: 8 juny 2012]. «we're very excited about the future potential for Age of Empires»
HeavenGames. «Ensemble Studios Chat 16Oct97» (en anglès). Arxivat de l'original el 2006-11-11. [Consulta: 16 juny 2012]. «The music was actually done by my two brothers,[…] They did a ton of research on the cultures, their styles, and their instruments..»