ウイリアム・ポーグ
↑ NASA Biographical Data Sheet
↑ William Pogue's Seiko 6139 Watch Flown on Board the Skylab 4 Mission, from his Personal Collection... The First Automatic Chronograph to be Worn in Space.
↑ The “Colonel Pogue” Seiko 6139, dreamchrono.com.
↑ http://www.floridatoday.com/article/20140305/SPACE/303050043/NASA-astronaut-William-Pogue-84-dies?nclick_check=1
↑ Sand Springs native, Skylab astronaut Bill Pogue dies at 84
↑ Pearlman, Robert. “Skylab astronaut William Pogue dies at 84”. collectSPACE. 2014年3月5日閲覧。