Gaya APA
Chiras, D, D. (1988).
Environmental science : a framework for decision making (2nd ed.).
Menlo Park:
The Benjamin / Cummings Pub. Co.,.
Gaya MLA
Chiras, Daniel, D..
"Environmental science : a framework for decision making".
2nd ed.
Menlo Park:
The Benjamin / Cummings Pub. Co.,,
1988.
Text.