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References are safer than pointer.
The compiler will make sure that they will point to some valid data
but in case of pointer it can point to NULL also.
At some place ,you are bound to use references ,for example
in operator overloading you will have to use reference .You can't use pointers.
Pointers are used where you want to be able to change the location of reference.
For example, Linked list and Trees.

reference is like a const pointer and it cannot be re-assigned.
syntactical advantage, as reference just appear as variable names instead of &(variable_name) /* example: incrementing operator for an enum type */

compare to ptr variable reference variab;e is best when we modifying actual arguments because ptr variabele allocates memory but reference variable does not allocate memory its just alias name just we assigned the adress is enough

Reference always refers to some object, meanwhile pointer can point to NULL.
You should use a reference when you exactly know that there is an object to refer to and you will always want to refer to that object and nothing else.