John Darroch. (1999). Chinese self taught by the natural method with phonetic pronunciation (Thimm's system) (2nd.). Asian Educational Services.
Chicago Edition CitationJohn Darroch. Chinese Self Taught by the Natural Method with Phonetic Pronunciation (Thimm's System). 2nd. New Delhi: Asian Educational Services, 1999.
Deismireacht MLAJohn Darroch. Chinese Self Taught by the Natural Method with Phonetic Pronunciation (Thimm's System). 2nd. Asian Educational Services, 1999.
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