Cornelius C. Kubler 
Intermediate Written Chinese [EPUB ebook] 
Read and Write Mandarin Chinese As the Chinese Do (Downloadable Material Included)

‘Contextualized so learners know not only what to say, but why, when, and with whom it is appropriate to use such language – thorough and clear – refreshing. –
Dr. Matthew Christensen, Associate Professor of Chinese, Brigham Young University ‘