Philippines. Department of Science and Technology. Philippines Center for Advanced Science and Technology Research and Development. PCARRD Online: PCARRD home page.
Cita Chicago (17th ed.)Philippines. Department of Science and Technology. Philippines Center for Advanced Science and Technology Research and Development. PCARRD Online: PCARRD Home Page.
Cita MLA (9th ed.)Philippines. Department of Science and Technology. Philippines Center for Advanced Science and Technology Research and Development. PCARRD Online: PCARRD Home Page.
Atenció: Aquestes cites poden no estar 100% correctes.