Heathcote, I. W. (1997). Environmental problem-solving : a case study: Approach. McGraw-Hill.
Chicago-čujuhus (17. p.)Heathcote, Isobel W. Environmental Problem-solving : a Case Study: Approach. Boston: McGraw-Hill, 1997.
MLA-čujuhus (9. p.)Heathcote, Isobel W. Environmental Problem-solving : a Case Study: Approach. McGraw-Hill, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.