Dyfyniad APA
Schnapf, L. P. (2003). Indoor air often poses greater hazards than outdoor air. Environmental Law Institute.
Dyfyniad Arddull Chicago
Schnapf, Lawrence P. Indoor Air Often Poses Greater Hazards than Outdoor Air. Washington, D.C.: Environmental Law Institute, 2003.
Dyfyniad MLA
Schnapf, Lawrence P. Indoor Air Often Poses Greater Hazards than Outdoor Air. Environmental Law Institute, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.