Okay, you may need to provide more information on what sort of church you were in however from the symbol itself, it seems to be an adaptation of the 'Dharmachakra' which is synonymous with Indian religion specifically Buddhism and Hinduism.

The wheel is one of the most commonly used Buddhist symbols in Indian art and is meant to represent the path to enlightenment.

If you provide more detail on the church you were in then someone else may be able to provide a more comprehensive answer and in terms of citation, I am not sure where to start as it is not really a question which can rely that much on a reference.