s this the correct way to cite a source using parenthetical documentation in my research paper?

After millions of years the deposits end up in rock and sediment where oil is trapped in small places. Natural gas is a gaseous fossil fuel that is versatile and abundant. Like oil, it is formed from the remains of marine microorganisms. (Raum, 4-9)

In the parenthesis, I have put the author's name from the book,and the page numbers. Is this okay?

Thanks
-MC

if you are using APA, then its the (author, p. 4-9) I believe.