DOEACC Society. (2001). Quanbook `O` level: Model questions Vol III Business systems...... BPB.
Chicago Style (17th ed.) CitationDOEACC Society. Quanbook `O` Level: Model Questions Vol III Business Systems...... New Delhi: BPB, 2001.
ציטוט MLADOEACC Society. Quanbook `O` Level: Model Questions Vol III Business Systems...... BPB, 2001.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.