Currently I am reading the book "**A primer of Mathematical writing**" by **Steven Krantz**. I have found it extremely useful. It is helping me with my thesis and 2 papers. 
The book covers everything from grammar, writing papers, CV, grants, job applications, books, book reviews, referee report, expositions also technical aspects like bibliography, index, appendix and even time management. 

The book is published by AMS, here is the amazon [link][1].


  [1]: http://www.amazon.com/Primer-Mathematical-Writing-Disquisition-Appreciated/dp/0821806351