Ostler, N. K. (1996). Introduction to environmental technology. Prentice-Hall.
Chicago-čujuhus (17. p.)Ostler, Neal K. Introduction to Environmental Technology. Englewood Cliffs: Prentice-Hall, 1996.
MLA-čujuhus (9. p.)Ostler, Neal K. Introduction to Environmental Technology. Prentice-Hall, 1996.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.