APA

Johnson R., 6. Conference europeenne et mediterraneenne sur les rouilles des cereales. Grignon (France). 4-7 Sep 1984 & Dyck P. (1984). Resistance to yellow rust in Triticum spelta var. album and bread wheat cultivars Thatcher and Lee [Puccinia striiformis]. : .

Chicago

Johnson R, 6. Conference europeenne et mediterraneenne sur les rouilles des cereales. Grignon (France). 4-7 Sep 1984 and Dyck P.L. 1984. Resistance to yellow rust in Triticum spelta var. album and bread wheat cultivars Thatcher and Lee [Puccinia striiformis]. : .

Harvard

Johnson R., 6. Conference europeenne et mediterraneenne sur les rouilles des cereales. Grignon (France). 4-7 Sep 1984 and Dyck P. (1984). Resistance to yellow rust in Triticum spelta var. album and bread wheat cultivars Thatcher and Lee [Puccinia striiformis]. : .

MLA

Johnson R, 6. Conference europeenne et mediterraneenne sur les rouilles des cereales. Grignon (France). 4-7 Sep 1984 and Dyck P.L. Resistance to yellow rust in Triticum spelta var. album and bread wheat cultivars Thatcher and Lee [Puccinia striiformis]. : . 1984.