University of the Philippines in the Visayas, Department of Environment and Natural Resources, & United Nation Development Programme. (1993). Environmental planning and maintenace for sustainable development: Executive summary. University of the Philippines in the Visayas.
Cytowanie według stylu Chicago (wyd. 17)University of the Philippines in the Visayas, Department of Environment and Natural Resources, i United Nation Development Programme. Environmental Planning and Maintenace for Sustainable Development: Executive Summary. Miagao, Iloilo, Philippines: University of the Philippines in the Visayas, 1993.
Cytowanie według stylu MLA (wyd. 9)University of the Philippines in the Visayas, et al. Environmental Planning and Maintenace for Sustainable Development: Executive Summary. University of the Philippines in the Visayas, 1993.