* Limit yourself to US Government (.gov), US military (.mil) or College and University websites (.edu) using Google Advanced Search.
* You can also use Google Advanced Search to find websites of a specific country. Find the domain code for your country and use it to limit your search.
(You might also find some good information on the website of the Embassy in the US of the Country you're studying, or the embassy of the US in that country.)
Still need to determine if a website you found is reliable? The CRAAPP Test will ask all the right questions to determine the reliability and usefulness of a site.