I usually use Macmillan English Dictionary to check the correct pronunciation but recently, my laptop has been formatted. So, I lost my only reference. So what I do was I search for other alternative.
I manage to find four websites which are http://www.merriam-webster.com, http://www.thefreedictionary.com/, http://www.macmillandictionary.com/ and http://www.howjsay.com/. These websites are very useful. Apart of providing definition, thesaurus, quizzes, games and etc, these websites also provide audio pronunciation where I can listen to the word that I searched for.
So, my lovely readers out there, if you are not sure about the correct pronunciation of certain words, you can just go to these websites.
The best about http://www.thefreedictionary.com/ is that it offers two types of pronunciation. One is in American accent and another one is in a Britain accent.
http://www.howjsay.com/ is used mainly for audio pronunciation. You type the word that you are looking for and it will pronounce it for you. Easy isn't it? So, check it out!