What are the excellent books about Pu 'er tea?

1. Appreciation and Brewing of Pu 'er Tea: A Book Published by China Light Industry Press in 2009, by Liu.

2. Pu 'er tea source: a book published by Yunnan People's Publishing House in 2005, by Zhang.

3. Pu 'er tea classics: a book published by Nanhai Publishing House in 2007 by Li Hao.

4. Grand View of Pu 'er Tea Culture: A book published by Huang Guishu in Yunnan Nationalities Publishing House in 2005.

5. Classic Pu 'er: A book published by Central Compilation Press 20 1 1 by Shi Kunmu.

6. China Pu 'er Tea: A book published by China Water Conservancy and Hydropower Publishing House in 2006, written by a Yunnan native.