Friend, M. A. Safety for nighttime retailers. Occupational health & safety.
Cita Chicago (17th ed.)Friend, Mark A. "Safety for Nighttime Retailers." Occupational Health & Safety .
Cita MLA (9th ed.)Friend, Mark A. "Safety for Nighttime Retailers." Occupational Health & Safety, .
Atenció: Aquestes cites poden no estar 100% correctes.