365746 Penna, C. V. (1970). The planning of library and documentation services. Unesco.
Chicagoスタイル(17版)引用形式365746 Penna, C. V. The Planning of Library and Documentation Services. Unesco, 1970.
MLA(9版)引用形式365746 Penna, C. V. The Planning of Library and Documentation Services. Unesco, 1970.
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