Case, K. (2002). Principles of economics (6th.). Pearson Education.
Chicago Style (17th ed.) CitationCase, Karl. Principles of Economics. 6th. Delhi: Pearson Education, 2002.
ציטוט MLACase, Karl. Principles of Economics. 6th. Pearson Education, 2002.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.