APA (7 वां संस्करण) प्रशस्ति पत्र

Não informado. (1990). Personnel Training and Education. Library Association, Personnel Training and Education Group.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Não informado. Personnel Training and Education. London: Library Association, Personnel Training and Education Group, 1990.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Não informado. Personnel Training and Education. Library Association, Personnel Training and Education Group, 1990.

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