CREATE TABLE table_name_56 (position VARCHAR2, leeds_career VARCHAR2, goals VARCHAR2, appearances VARCHAR2, nationality VARCHAR2)

What position does the Wales player who made more than 167 appearances, had more than 0 goals, and had a Leeds career from 1977 1982 play?
SELECT position FROM table_name_56 WHERE appearances > 167 AND nationality = "wales" AND goals > 0 AND leeds_career = "1977–1982"
SELECT "position" FROM "table_name_56" WHERE "1977–1982" = "leeds_career" AND "appearances" > 167 AND "goals" > 0 AND "nationality" = "wales"