Duo Duo & Lucas Klein. Words as grain: New and selected poems. London.
Citazione stile Chigago Style (17a edizione)Duo Duo e Lucas Klein. Words as Grain: New and Selected Poems. New Haven: London.
Citatione MLA (9a ed.)Duo Duo e Lucas Klein. Words as Grain: New and Selected Poems. London.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.