(1997). Sustainable livelihood options for the Philippines: An information kit. Urban-lowland ecosystem. Department of Environment and Natural Resources.
Chicago-Zitierstil (17. Ausg.)Sustainable Livelihood Options for the Philippines: An Information Kit. Urban-lowland Ecosystem. Diliman, Q.C: Department of Environment and Natural Resources, 1997.
MLA-Zitierstil (9. Ausg.)Sustainable Livelihood Options for the Philippines: An Information Kit. Urban-lowland Ecosystem. Department of Environment and Natural Resources, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.