how to make multiple sound augmented reality in 1 scene UNITY?

In my case :- I will make multiple sound augmented reality in 1 scene UNITY , but now i just can make only 1 sound in a scene Unity :-

I make it at AR Camera with Audio Source

and sound scrip:

using UnityEngine; using System.Collections;

public class DolSound : MonoBehaviour {

 public Transform target2; 
 public AudioSource suaradol; 

 void Start () {

 }

 void Update(){
     if(Input.GetMouseButton(0)){
         Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
         RaycastHit hit;

         if(Physics.Raycast(ray, out hit)){ 
             if(hit.transform == target2){
                 suaradol.GetComponent<AudioSource>().Play(); 
             }
         }
     }
 }

} Please teach me step and script to make multiple sound augmented reality in 1 scene UNITY

someone tell me , i must assign AudioClip to them and play them one by one, but how about the step to get it ???