Giller, K. E. (1993). Nitrogen fixation in tropical cropping: Systems. C.A.B,I.
Chicago-čujuhus (17. p.)Giller, Ken E. Nitrogen Fixation in Tropical Cropping: Systems. Wallingford: C.A.B,I, 1993.
MLA-čujuhus (9. p.)Giller, Ken E. Nitrogen Fixation in Tropical Cropping: Systems. C.A.B,I, 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.