Johnson, G. B. (2006). The living world. New York: McGraw-Hill Higher Education.
Trích dẫn kiểu ChicagoJohnson, George B. The Living World. New York: McGraw-Hill Higher Education, 2006.
ציטוט MLAJohnson, George B. The Living World. New York: McGraw-Hill Higher Education, 2006.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.