APA-viite

Villegas Osorio, J. G. (1995). Water quality assessment in the Reventado's watershed, Cartago, Costa Rica, oriented to the development of indicators of sustainability.

Chicago-tyylinen lähdeviittaus

Villegas Osorio, Javier G. Water Quality Assessment in the Reventado's Watershed, Cartago, Costa Rica, Oriented to the Development of Indicators of Sustainability. 1995.

MLA-viite

Villegas Osorio, Javier G. Water Quality Assessment in the Reventado's Watershed, Cartago, Costa Rica, Oriented to the Development of Indicators of Sustainability. 1995.

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