BARNES C. (1988). PROFESSIONAL EXCELLENCE FOR SECRETARIES. CRISP PUBLICATION.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBARNES C. PROFESSIONAL EXCELLENCE FOR SECRETARIES. CALIFORNIA: CRISP PUBLICATION, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBARNES C. PROFESSIONAL EXCELLENCE FOR SECRETARIES. CRISP PUBLICATION, 1988.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.