Hakka
The scheme for Hakka is outlined in "The Hakka Transliteration Scheme" (simplified Chinese: 《客家话拼音方案》; traditional Chinese: 《客家話拼音方案》; pinyin: Kèjiāhuà Pīnyīn Fāng'àn). The scheme describes the Meixian dialect, which is generally regarded as the de facto standard dialect of Hakka.
This scheme is the romanization scheme currently described in the Hakka Chinese article.
Read more about this topic: Guangdong Romanization