Field, B. C. (1994). Environmental economics: An introduction: An introduction. New York: McGraw-Hill.
Trích dẫn kiểu ChicagoField, Barry C. Environmental Economics: An Introduction: An Introduction. New York: McGraw-Hill, 1994.
ציטוט MLAField, Barry C. Environmental Economics: An Introduction: An Introduction. New York: McGraw-Hill, 1994.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.