APA Style

Organization, W, H. (1997). Determination of Airborne Fibre Number Concentrations : a Recommended Method, by Phase-contrast Optical Microscopy ( Membrane Filter Method ) . Geneva: World Health Organization.

MLA Style

Organization, World, Health. "Determination of Airborne Fibre Number Concentrations : a Recommended Method, by Phase-contrast Optical Microscopy ( Membrane Filter Method )". Geneva: World Health Organization, 1997. print.