Chumo II 2000, 26–27쪽 Chumo II, Peter N. (January 2000). “American Beauty: An Interview with Alan 볼”. 《Creative Screenwriting Magazine》 (Los Angeles: Creative Screenwriters Group) 7 (1): 26–35. ISSN1084-8665.
Chumo II 2000, 30쪽 Chumo II, Peter N. (January 2000). “American Beauty: An Interview with Alan 볼”. 《Creative Screenwriting Magazine》 (Los Angeles: Creative Screenwriters Group) 7 (1): 26–35. ISSN1084-8665.