How to listen to audio music from my iPhone in my car speaker?

I listen to some audio books from my iPhone, but now I need to connect iPhone to my car so that I could listen to these audio book in car speaker whole driving, what is the best way to do this.

I have Toyota Camry which have No CD or Bluetooth.

If you have an auxiliary input you can just hook it up from your iphone to your cars auxiliary input.

If the stereo doesn't have an aux input port, replace the stereo with one that does.