Increase heat to 400ºF. Place a shallow pan of water on bottom rack of oven. In large bowl, beat cream cheese with electric mixer until light and fluffy. Gradually beat in sugar; mix well. Add flour, zests and vanilla; mix well. With the mixer on low speed, add eggs and yolk one at a time, scraping down the sides of the bowl as needed. When mixture is completely smooth, beat in sour cream. Pour filling into prepared crust.