CREATE TABLE table_name_19 (winning_score VARCHAR, margin_of_victory VARCHAR, date VARCHAR)

Which Winning score has a Margin of victory of 1 stroke, and a Date of 21 jun 1981?
SELECT winning_score FROM table_name_19 WHERE margin_of_victory = "1 stroke" AND date = "21 jun 1981"
SELECT "winning_score" FROM "table_name_19" WHERE "1 stroke" = "margin_of_victory" AND "21 jun 1981" = "date"