●漢語拼音與注音符號基本規則對照表●

http://www.itpth.foruto.com/01resources/clavier.html
http://www.cnpedia.com/pages/knowledge/baserule.htm
http://www.iq-t.com/SYSCOM/pingying2.asp
http://www.ntnu.edu.tw/tcsl/Teaching-Resources/pin-yin-contrast-3.htm