LEXIS NEXIS. The Occupational Safety, Health and Working Conditions Code 2020. Lexis Nexis.
Chicago-čujuhus (17. p.)LEXIS NEXIS. The Occupational Safety, Health and Working Conditions Code 2020. Lexis Nexis.
MLA-čujuhus (9. p.)LEXIS NEXIS. The Occupational Safety, Health and Working Conditions Code 2020. Lexis Nexis.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.