The first link shows a 7809
means nine-volt output). The other two are 5V outputs. I would go with the third (100uF/10uF/100nF) version here, but really anything would work --> not much ripple to filter from a 12-14VDC input from a car. If the source was AC power through some diodes, one might get fussier and read the exact parts' datasheets to get the recommended values.
EDIT: Eg, here
is the datasheet for a Texas Instruments 78L05 chip. Refer to the top of page 11 for recommended capacitor values (0.33uF and 0.1uF in this case).
is the ST Microelectronics version, again recommending 0.33uF/0.1uF (page 2).
The further the regulator is from the source of power, the larger the first capacitor. Or at least that's what I have read in other datasheets.