Cast And Crew to How Can I Be Sure of You in 6 Steps
- Cast And Crew was produced by Rick Jarrard
- Rick Jarrard produced The Tree
- The Tree was arranged by George Tipton
- George Tipton arranged She Sang Hymns Out of Tune
- She Sang Hymns Out of Tune was sung by Harry Nilsson
- Harry Nilsson sang How Can I Be Sure of You