Cunningham, W. P. (2005). Environmental science: A global concern. Boston: McGraw-Hill Higher Education.
Trích dẫn kiểu ChicagoCunningham, William P. Environmental Science: A Global Concern. Boston: McGraw-Hill Higher Education, 2005.
ציטוט MLACunningham, William P. Environmental Science: A Global Concern. Boston: McGraw-Hill Higher Education, 2005.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.