Mattsson, J. O. (1966). Cropclimatic studies: With special regard to the air temperature of potato fields.
Lua i Stíl Chicago (17ú heag.)Mattsson, Jan O. Cropclimatic Studies: With Special Regard to the Air Temperature of Potato Fields. Lund, 1966.
Lua MLA (8ú heag.)Mattsson, Jan O. Cropclimatic Studies: With Special Regard to the Air Temperature of Potato Fields. 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.