APA ציטוט
Gregory, P. R. (1990). Essentials of economics (2nd ed.). Scott, Foresman.
Chicago Style (17th ed.) Citation
Gregory, Paul R. Essentials of Economics. 2nd ed. Glenview, Ill.: Scott, Foresman, 1990.
ציטוט MLA
Gregory, Paul R. Essentials of Economics. 2nd ed. Scott, Foresman, 1990.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.