Matthews, C., & Cope, W. (1990). Strugnell's Haiku for voice and piano: Colin Matthews. Poems by Wendy Cope. Faber Music.
Lua i Stíl Chicago (17ú heag.)Matthews, Colin, agus Wendy Cope. Strugnell's Haiku for Voice and Piano: Colin Matthews. Poems by Wendy Cope. London: Faber Music, 1990.
Lua MLA (8ú heag.)Matthews, Colin, agus Wendy Cope. Strugnell's Haiku for Voice and Piano: Colin Matthews. Poems by Wendy Cope. Faber Music, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.