(1999). Environmental valuation. Edward Elgar.
Chicago Style (17. basım) AtıfEnvironmental Valuation. Chellcnhan: Edward Elgar, 1999.
MLA (9th ed.) AtıfEnvironmental Valuation. Edward Elgar, 1999.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..
(1999). Environmental valuation. Edward Elgar.
Chicago Style (17. basım) AtıfEnvironmental Valuation. Chellcnhan: Edward Elgar, 1999.
MLA (9th ed.) AtıfEnvironmental Valuation. Edward Elgar, 1999.