SQL distinct problem

Hvordan spørger jeg distinct på kunde.tlf1 for at få fjernet dubletter?


SELECT destination.destination, kunde.navn, kunde.firma, kunde.adresse, kunde.postnr, kunde.bynavn, kunde.tlf1
FROM ((kunde INNER JOIN booking ON kunde.kunde_id = booking.kunde_id) INNER JOIN tur_des_pas ON booking.tur_id = tur_des_pas.tur_id) INNER JOIN destination ON tur_des_pas.destination_id = destination.destination_id
WHERE (((destination.destination) In ("S","H","B","H","R","Su")));