(19). Safety in construction [kasetvideo]. Kent : M & M Audio Visual.
Cita Chicago (17th ed.)Safety in Construction [kasetvideo]. Kent : M & M Audio Visual, 19.
Cita MLA (9th ed.)Safety in Construction [kasetvideo]. Kent : M & M Audio Visual, 19.
Atenció: Aquestes cites poden no estar 100% correctes.