Which of the following parenthetical citations is correct?

One scholar argues, "While we often think of big data and algorithms as benign or neutral, they are in actuality the opposite" $($Mansfield $2).$

One scholar argues, "While we often think of big data and algorithms as benign or neutral, they are in actuality the opposite" $($Mansfield $p.2).$

One scholar argues, "While we often think of big data and algorithms as benign or neutral, they are in actuality the opposite" $("$Big Data is Coming for Us All" $2).$

One scholar argues, "While we often think of big data and algorithms as benign or neutral, they are in actuality the opposite." $($Mansfield $2).$