Please suggest some books that help improving "general-essay writing" of graduate level.

Student or Learner
Please suggest some books that help improving "general-essay writing" of graduate level.
P.S. Please correct any errors above.
It's not new, but I enjoyed teaching academic writing with Sam McCarter's A Book on Writing when I was working in universities, and it is a no-nonsense guide to writing.
I searched it up, but didn't find the book. Nor is it available on online book stores. Could you please provide the link of the book?
P.S. Please correct any errors above.
A simple search brings up many copies for me.
Note my corrections above. We don't "search up" something, we "search for" something. I hope you're not expecting anyone to provide a link to an online PDF copy of an entire book - that's illegal.
There are plenty of copies available to buy on Amazon.
Last edited by emsr2d2; 14-Feb-2017 at 17:13.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
For a free, online writing resource, nothing beats the OWL at Purdue, in my opinion.
https://owl.english.purdue.edu/owl/
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.