Krishnan, P. (1992). The elderly population in developed... world. B.R. Pub.
Chicago-čujuhus (17. p.)Krishnan, P. The Elderly Population in Developed... World. Delhi: B.R. Pub, 1992.
MLA-čujuhus (9. p.)Krishnan, P. The Elderly Population in Developed... World. B.R. Pub, 1992.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.