You should provide us with your mathematical background first, right?
What do you mean by easy ways?
Well, you just integrate each of the components normally one at a time. Depending on your limits.
Assuming you have Cartesian coordinates (x,y,z). Convert each component to its Spherical/Cylindrical counterpart and multiply by the Jacobian of the new coordinate system. So, just convert to the new coordinate system, multiply by the Jacobian and then integrate normally.