Roberts, E. (1972). Viability of seeds. Chapman and Hall.
Chicago-čujuhus (17. p.)Roberts, E.H. Viability of Seeds. London: Chapman and Hall, 1972.
MLA-čujuhus (9. p.)Roberts, E.H. Viability of Seeds. Chapman and Hall, 1972.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.