Yu-Tzu Chiu. Russia and Canada to ratify Kyoto Protocol. IEEE spectrum.
Lua i Stíl Chicago (17ú heag.)Yu-Tzu Chiu. "Russia and Canada to Ratify Kyoto Protocol." IEEE Spectrum .
Lua MLA (9ú heag.)Yu-Tzu Chiu. "Russia and Canada to Ratify Kyoto Protocol." IEEE Spectrum, .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.