Boland, R. G. A. (1993). General environmental management. Sterling publishers Private Limited.
Chicago-čujuhus (17. p.)Boland, R. G. A. General Environmental Management. New Delhi: Sterling publishers Private Limited, 1993.
MLA-čujuhus (9. p.)Boland, R. G. A. General Environmental Management. Sterling publishers Private Limited, 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.