Hengeveld, Ed. The man behind the Moon mission patches. collectSPACE. Robert Pearlman. 2008-05-20 [2020-12-12]. (原始内容存档于2020-12-03).本文同时还在英国星际学会《太空飞行》(Spaceflight)杂志发表,见2008年6月杂志,第220至225页。
Oral History Transcript(PDF). Johnson Space Center Oral History Project. 访谈 with Kevin M. Rusnak. Houston, Texas: NASA: 12–15. 2000-07-17 [2020-12-11]. (原始内容存档(PDF)于2020-10-30).
newspapers.com
Designed Insignia for Astronauts. The Humboldt Republican (Humboldt, Iowa). 1968-11-06: 12 [2020-12-12]. (原始内容存档于2019-09-22) –通过Newspapers.com.
Oral History Transcript(PDF). Johnson Space Center Oral History Project. 访谈 with Kevin M. Rusnak. Houston, Texas: NASA: 12–15. 2000-07-17 [2020-12-11]. (原始内容存档(PDF)于2020-10-30).
Designed Insignia for Astronauts. The Humboldt Republican (Humboldt, Iowa). 1968-11-06: 12 [2020-12-12]. (原始内容存档于2019-09-22) –通过Newspapers.com.
Hengeveld, Ed. The man behind the Moon mission patches. collectSPACE. Robert Pearlman. 2008-05-20 [2020-12-12]. (原始内容存档于2020-12-03).本文同时还在英国星际学会《太空飞行》(Spaceflight)杂志发表,见2008年6月杂志,第220至225页。