Roberts, B. (2002). Biographical research. Open University Press.
Chicago-čujuhus (17. p.)Roberts, Brian. Biographical Research. Buckingham ; Phildelphia: Open University Press, 2002.
MLA-čujuhus (9. p.)Roberts, Brian. Biographical Research. Open University Press, 2002.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.