Raymond, Eric. “Halloween Document II”. 2018年4月4日閲覧。 “memorandum was prepared over the weekend of 31 Oct-1 Nov 1998. [..] help realize Microsoft's worst nightmares, that I named it the Halloween Document.”
Raymond, Eric. “Halloween Documents FAQ”. 2018年4月4日閲覧。 “They came to me by email from three different sources. Like any good investigative reporter, I'm not going to reveal who those sources were.”
Raymond, Eric. “Halloween Documents FAQ”. 2018年4月4日閲覧。 “Would you please make un-annotated versions available? No. As it is, my defense against a copyright-violation suit by Microsoft [...]. I fear that making un-annotated copies available would place me at significant legal risk.”
“Plaintiff's Exhibit 6501” (PDF). Exhibits Offered by Plaintiffs on 1.11.07 and Admitted by the Court on 1.16.07. iowa.gotthefacts.org (2007年1月16日). 2007年11月7日時点のオリジナルよりアーカイブ。2012年6月2日閲覧。
“Plaintiff's Exhibit 6501” (PDF). Exhibits Offered by Plaintiffs on 1.11.07 and Admitted by the Court on 1.16.07. iowa.gotthefacts.org (2007年1月16日). 2007年11月7日時点のオリジナルよりアーカイブ。2012年6月2日閲覧。
