Citazione Stile APA (7a Edizione)

(2001). Ocupational Health: A Manual for primary health care workers (N/A.). N/A.

Citazione stile Chigago Style (17a edizione)

Ocupational Health: A Manual for Primary Health Care Workers. N/A. Cairo: N/A, 2001.

Citatione MLA (9a ed.)

Ocupational Health: A Manual for Primary Health Care Workers. N/A. N/A, 2001.