Why does LaTeX start a new line when making a reference

I just created a LaTeX document and compile it to a PDF using pdftex. Every time I make a reference using the \ref command, the reference is put on a new line. Why does this happen and how do I prevent this?

It was my own fault, I used \par for the paragraph sign instead of \P. This is one of my first LaTeX documents, so I overlooked it. Thanks for the quick responses/answers though.