Sandhu, G. (1990). Research techniques in biological sciences. Anmol.
Chicago-čujuhus (17. p.)Sandhu, G.S. Research Techniques in Biological Sciences. New Delhi: Anmol, 1990.
MLA-čujuhus (9. p.)Sandhu, G.S. Research Techniques in Biological Sciences. Anmol, 1990.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.