Ward; Toole; Ponder; Meadows; Simmons; Lytle; McDonald; Kavanaugh (January 13, 1968). "EVALUATION OF AS-203 LOW GRAVITY ORBITAL EXPERIMENT"(PDF). NASA Technical Reports Server. Archived(PDF) from the original on October 18, 2022. Retrieved October 7, 2024.
planet4589.org
McDowell, Jonathan. "SATCAT". Jonathan's Space Pages. Retrieved March 23, 2014.
"Apollo AS-203". NASA Space Science Data Coordinated Archive. Archived from the original on May 30, 2024. Retrieved October 7, 2024.
Ward; Toole; Ponder; Meadows; Simmons; Lytle; McDonald; Kavanaugh (January 13, 1968). "EVALUATION OF AS-203 LOW GRAVITY ORBITAL EXPERIMENT"(PDF). NASA Technical Reports Server. Archived(PDF) from the original on October 18, 2022. Retrieved October 7, 2024.