Quotes in a formula

If I have a cell that will have a formula like this:

=IF(B11="n",SUM(I11)-(I11*J11),0)

and I want to program that into multiple cells with VBA, how do I put in the quotes around the 'n'?

For example:

"=IF(B" & i & "='n',SUM(I" & i & ")-(I" & i & *J & "),0)"

How do I fix that so that it will work?

There is more than one way... here is one of them:

Range("A" & i).Formula = _
      "=IF(B" & i & "=""n""" & ",SUM(I" & i & ")-(I" & i & "*J" & i & "),0)"