Census and Statistics Department, Hong Kong Special Administrative Region, «Use of Language in Hong Kong», Thematic Household Survey Report No. 51, 1-a de majo 2013, p. 10 (legi retearkivo).
Census and Statistics Department, Hong Kong Special Administrative Region, «Use of Language in Hong Kong», Thematic Household Survey Report No. 51, 1-a de majo 2013, p. 10 (legi retearkivo).