Boland, R. G. A. (1986). Environmental management. Sterling publishers Private Limited.
Chicago-čujuhus (17. p.)Boland, R. G. A. Environmental Management. New Delhi: Sterling publishers Private Limited, 1986.
MLA-čujuhus (9. p.)Boland, R. G. A. Environmental Management. Sterling publishers Private Limited, 1986.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.