APA Format
Cowles, Sally R. . (). Occupational...: Occupational medicine, ( Ket. lihat bab. 3 ) ( halaman 35-46 ). : Itasca, Ill National Safety Council 1994
MLA Format
Cowles, Sally R. . Occupational...: Occupational medicine, ( Ket. lihat bab. 3 ) ( halaman 35-46 ). : Itasca, Ill National Safety Council 1994,
Australian/Harvard Format
Cowles, Sally R. . . Occupational...: Occupational medicine, ( Ket. lihat bab. 3 ) ( halaman 35-46 ). Itasca, Ill National Safety Council 1994, 
Warning: These citations may not always be 100% accurate.