It depends on the style you are using, but if you are using Harvard (UTS) then an in-text reference with a page number looks like this: (Mazutis & Slawinski 2008, p. 442).

Note that there is no comma between the author name(s) and the year. If you want to refer to more than one page, it looks like this: (Mazutis & Slawinski 2008, pp. 442-3) for example.