Reese, Charles D.
Industrial safety and health for administrative services
CRC Press, Taylor & Francis Group, 2009
 Buku Referensi
Reese, Charles D.
Handbook of safety and health for the service industry: industrial safety and health for people-oriented services
CRC Press, 2009
 Buku Referensi
Robertson, Cathie, 1946-
Safety, nutrition, and health in early education
Wadsworth and Cengage Learning, 2013
 Buku Teks
Friend, Mark A.
Fundamentals of occupational safety and health
Bernan Press, 2014
 Buku Teks
Stanback, Thomas M.
Understanding the service economy / Thomas M. Stanback
Johns Hopkins University Press, 1979
 Buku Teks