APA Format
World Health Organization (WHO) . (). Recommended health based limits in occupational exposure to selected mineral dusts (silica, coal), TRS.734. : Geneva WHO 1986
MLA Format
World Health Organization (WHO) . Recommended health based limits in occupational exposure to selected mineral dusts (silica, coal), TRS.734. : Geneva WHO 1986,
Australian/Harvard Format
World Health Organization (WHO) . . Recommended health based limits in occupational exposure to selected mineral dusts (silica, coal), TRS.734. Geneva WHO 1986, 
Warning: These citations may not always be 100% accurate.