Last 12 Months

Hello. I am currently using the following to pull the last 12 months of data

month({@ResolveDate})>=month(currentdate)-12

I need to pull the same data but only include full months. For example if I run this on 3/4/09 I do not want the data from the partial month of march to display. I want 3/1/08- 2/28/09.

Thank you.