Hi,

first of all if your father over 60 years old it's difficult to get him a visa but you can try

Documens required for visit visa are:

1- your father's passport copy & make sure that the date of birth in that page

2- copy of your RP

3- fill the Visa form (you can get it in the immigration office)

4- paper confirming your (you & your father) relationship even I have never been asked for it when I applied for my mother & brother before

Go to the immigration office near airport or the other one near Madina (city) petrol station & the procedure won't get you more than one hour approximately

good luck,

tareqma