CATIE, T. (. R. G., & Beer, J. (1990). Technical Cooperation between the Government of the Republic of the Philippines and the Federal Republic of Germany RP-German Dipterocarp Forest Management Project PN: 88.2047.4.
Chicago-tyylinen lähdeviittausCATIE, Turrialba (Costa Rica). GTZ., ja J. Beer. Technical Cooperation between the Government of the Republic of the Philippines and the Federal Republic of Germany RP-German Dipterocarp Forest Management Project PN: 88.2047.4. 1990.
MLA-viiteCATIE, Turrialba (Costa Rica). GTZ., ja J. Beer. Technical Cooperation between the Government of the Republic of the Philippines and the Federal Republic of Germany RP-German Dipterocarp Forest Management Project PN: 88.2047.4. 1990.
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