CREATE TABLE table_name_70 (urban_sub_area VARCHAR2, council_area VARCHAR2, population VARCHAR2)

What is the urban sub-area with an East Dunbartonshire council area and a population of 19,020?
SELECT urban_sub_area FROM table_name_70 WHERE council_area = "east dunbartonshire" AND population = "19,020"
SELECT "urban_sub_area" FROM "table_name_70" WHERE "19,020" = "population" AND "council_area" = "east dunbartonshire"