Chen, D. (1973). Ying xiao zhong xue shi yong ying yun wen =: Chinese letter-writing for English secondary school. Sheng li shu ju.
Dyfyniad Arddull ChicagoChen, Dinghua. Ying Xiao Zhong Xue Shi Yong Ying Yun Wen =: Chinese Letter-writing for English Secondary School. Singapore: Sheng li shu ju, 1973.
Dyfyniad MLAChen, Dinghua. Ying Xiao Zhong Xue Shi Yong Ying Yun Wen =: Chinese Letter-writing for English Secondary School. Sheng li shu ju, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.