411 REFERENCE · Wikibooks
Pinyin/University Of London
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
See also
Pinyin#Pinyin tone marking
London Dahxuer
Today's editionIndia · World · Your city
Sourced news from India & the world
Every story, the full picture
Public archive edition · Attributed source reporting with original dates · AI drafts are excluded