Points were awarded on a 9-6-4-3-2-1 basis to the top six outright placegetters in each round. Only the best nine scores could be retained by each driver although this had no effect on the nett pointscores.
Australian Motor Racing Yearbook, 1980/81
CAMS Manual of Motor Sport, 1980
Official Program, Adelaide International Raceway, Sunday, October 19 1980