Douglas MacArthur's address to the Annual Stockholders Sperry Rand Corporation in New York (July 30, 1957) as quoted in "General MacArthur Speeches and Reports 1908-1964" edited by Edward T. Imparato (p. 206), June 14, 2000.
"Are We Prepared? An Exclusive Interview with WHO Director-General Margaret Chan". “Next Outbreak” with Joanne Silberner, www.pbs.org. September 28, 2015.
"Finding Joy in the Nitty-Gritty: An Interview with Ann Voskamp". "Homeschool Heartbeat" podcast with Mike Farris (Volume 127, Week 14), www.hslda.org. August 8-12, 2016.