HUMPHRIES JOHN. (1995). HOW TO COUNSEL PEOPLE AT WORK. HOW TO BOOKS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHUMPHRIES JOHN. HOW TO COUNSEL PEOPLE AT WORK. PLYMOUTH: HOW TO BOOKS, 1995.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHUMPHRIES JOHN. HOW TO COUNSEL PEOPLE AT WORK. HOW TO BOOKS, 1995.
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