What is the easy way when input a lookup field can popup a select form like CRM lookup field. I don't want to use widget.

What is the easy way when input a lookup field can popup a select form like CRM lookup field. I don't want to use widget.

What is the easy way when input a lookup field can popup a form with data view like CRM lookup field.
I don't want to use widget to do that.

Does anyone can give me a advice?