Dyfyniad APA

United States National Aeronautics and Space Administration, & United States National Aeronautics and Space Administration. (1960). Space. Washington: United States Information Service.

Dyfyniad Arddull Chicago

United States National Aeronautics and Space Administration, και United States National Aeronautics and Space Administration. Space. Washington: United States Information Service, 1960.

Dyfyniad MLA

United States National Aeronautics and Space Administration, και United States National Aeronautics and Space Administration. Space. Washington: United States Information Service, 1960.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.