Analysis of information sources in references of the Wikipedia article "Katherine Johnson" in Malay language version.
Her calculations proved as critical to the success of the Apollo Moon landing program and the start of the Space Shuttle program, as they did to those first steps on the country's journey into space.
Petikan dari W. Warren, Katherine Coleman Goble Johnson, dalam Black Women Scientists in the United States (Indiana University Press, 1999), 140–147.