The law requires you to submit two seperate petitions one I-130 for each parent. Once the I-130 petitions are approved they each need to submit their own application for consular processing (if they are processing outside the US) or adjustment of status (if they are processing in the US).
Good Luck, Leon
This answer does not create an attorney client relationship and is not a substitute for actual legal representation.
You need to file two separate I-130d for your mother and father. That's the only way to do it.