The story behind the record cover - Discipline (1981) - King Crimson - Poppodium Boerderij

DETRITUS, Rock Hard With A Purpose

The Quietus, Features, Anniversary

King Crimson – Discipline (1981, Impact Pressing, Embossed Cover, Vinyl) - Discogs

King Crimson - Discipline, Releases

King Crimson – Discipline (1981, Vinyl) - Discogs

Discipline by King Crimson: why you should definitely own it

DETRITUS, Rock Hard With A Purpose

Discipline (King Crimson album), Music Hub

Discipline - The Long View