Lindqvist, K. (1960). Studies in wild and cultivated lettuce. Berlingska Boktryckeriet.
Lua i Stíl Chicago (17ú heag.)Lindqvist, K. Studies in Wild and Cultivated Lettuce. Lund [Sweden]: Berlingska Boktryckeriet, 1960.
Lua MLA (8ú heag.)Lindqvist, K. Studies in Wild and Cultivated Lettuce. Berlingska Boktryckeriet, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.