CREATE TABLE table_name_68 (partner VARCHAR, date VARCHAR, opponents_in_the_final VARCHAR)

Name the Partner which is in 1979, and Opponents in the final of heinz g nthardt bob hewitt?
SELECT partner FROM table_name_68 WHERE date = 1979 AND opponents_in_the_final = "heinz günthardt bob hewitt"
SELECT "partner" FROM "table_name_68" WHERE "date" = 1979 AND "heinz günthardt bob hewitt" = "opponents_in_the_final"