Landsburgh, R. H. (1926). Industrial safety. The American Avademy of Political and Social Science.
Citazione stile Chigago Style (17a edizione)Landsburgh, Richard Hines. Industrial Safety. Philadelphia: The American Avademy of Political and Social Science, 1926.
Citatione MLA (9a ed.)Landsburgh, Richard Hines. Industrial Safety. The American Avademy of Political and Social Science, 1926.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.