https://play.google.com/store/books/details/呂龍潭_策略規劃手冊?id=jLuODwAAQBAJ

http://www.codedata.com.tw/social-coding/google-play-ebook-md-to-pdf-and-epub/

Google Play 電子書新手上架（一）從 MD 到 PDF、ePub

http://www.codedata.com.tw/social-coding/google-play-ebook-2-upload-pdf-epub/

Google Play 電子書新手上架（二）上架 PDF 與 ePub 檔案

https://play.google.com/books/publish/?re=1

ePub Check online

http://validator.idpf.org/