Science and Technology Information Institute (Philippines). Philippine inventions. Science and Technology Information Institute, Dept. of Science and Technology.
Chicago-Zitierstil (17. Ausg.)Science and Technology Information Institute (Philippines). Philippine Inventions. Manila, Philippines: Science and Technology Information Institute, Dept. of Science and Technology.
MLA-Zitierstil (8. Ausg.)Science and Technology Information Institute (Philippines). Philippine Inventions. Science and Technology Information Institute, Dept. of Science and Technology.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.