Cita APA

Helmich, H. (1990). Directory of non - governmental development organizations in OECD member countries. París: OCDE.

Citación estilo Chicago

Helmich, Henry. Directory of Non - Governmental Development Organizations in OECD Member Countries. París: OCDE, 1990.

Cita MLA

Helmich, Henry. Directory of Non - Governmental Development Organizations in OECD Member Countries. París: OCDE, 1990.

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