United States National Aeronautics and Space Administration, & United States National Aeronautics and Space Administration. (1960). Space. Washington: United States Information Service.
Παραπομπή Chicago StyleUnited States National Aeronautics and Space Administration, και United States National Aeronautics and Space Administration. Space. Washington: United States Information Service, 1960.
Παραπομπή MLAUnited States National Aeronautics and Space Administration, και United States National Aeronautics and Space Administration. Space. Washington: United States Information Service, 1960.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.