ZHANG Liyan 
Dictionary with Mandarin and Cantonese Pinyin Indexes (New Revised Edition) [PDF ebook] 

The book is a revision of the Dictionary with Mandarin and Cantonese Pinyin Indexes published in 1985.The revised edition includes 4700 commonly used characters (600 more than the 4100 characters of the original one) arranged by three different indexes:(1) Radicals index; (2) Cantonese pinyin index; (3) Mandarin pinyin index.As a reference book that allows readers to search by pinyin, it excels in its versatility and portability.What is special about this book is that users can search directly by pinyin alphabetically and compare the Mandarin pinyin with the Cantonese pinyin which are juxtaposed side by side. In the same list readers can find the homophones of a character and the pronunciation (distribution) of the character in the other language, which is an effective way of learning language, whether Mandarin or Cantonese.