Gaya APA

Environmental management strategies : the 21st century perspective / Gabriele Crognale. (1999). : Upper Saddle River, N.J., Prentice Hall PTR.

Gaya MLA

Environmental management strategies : the 21st century perspective / Gabriele Crognale. . : Upper Saddle River, N.J., Prentice Hall PTR, 1999. Text.