BibTeX by the Wikipedia references

I am a Ph.D. candidate, and I am writing my thesis.

I have chose to use BibTeX (because Google uses it, and it is easy to find), but not always.

The example is when I use Wikipedia, I find the references, I try to looking for in Google Scholar, but sometimes is difficult to find the reference.

I know that Google use, as scheme, AuthorYearFirst_Word, but I do not know how use this key of research, because Google use an internal ID for each BibTeX.

QUESTION: Is possible find the BibTeX, if I know only Author, Year of publication and Title of paper?

Thank you in advance.