National Geographic Society. (2000). Plants. New York: McGraw-Hill School Division.
Trích dẫn kiểu ChicagoNational Geographic Society. Plants. New York: McGraw-Hill School Division, 2000.
ציטוט MLANational Geographic Society. Plants. New York: McGraw-Hill School Division, 2000.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.