Philippines Bureau of Local Government and Community Development & Philippines Civil Service Commission, Office of Career and Employee Development. (1970). Introduction to supervision. s.n.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhilippines Bureau of Local Government and Community Development और Office of Career and Employee Development Philippines Civil Service Commission. Introduction to Supervision. [S.l: s.n.], 1970.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPhilippines Bureau of Local Government and Community Development और Office of Career and Employee Development Philippines Civil Service Commission. Introduction to Supervision. s.n.], 1970.
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