Salud, J. P. (2014). Ecoshield's engineered sanitary landfill: Technology whose time has come. Philippine Graphic.
Chicago-Zitierstil (17. Ausg.)Salud, Joel Pablo. "Ecoshield's Engineered Sanitary Landfill: Technology Whose Time Has Come." Philippine Graphic 2014.
MLA-Zitierstil (9. Ausg.)Salud, Joel Pablo. "Ecoshield's Engineered Sanitary Landfill: Technology Whose Time Has Come." Philippine Graphic, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.