Citations
- "Heliport." Occupational Safety and Health Administration (OSHA). Retrieved from: www.osha.gov/SLTC/etools/hospital/heliport/heliport.html#EquipmentHazards
- "Occupational Noise Exposure." Occupational Safety and Health Administration (OSHA). Retrieved from: www.osha.gov/noise
- "Hospital Heliports." U.S. Department of Transportation. Retrieved from: www.faa.gov/documentLibrary/media/Advisory_Circular/150_5390_2c.pdf