Gaya APA
Rosenstock, L. (1987).
Occupational Medicine: Occupational Pulmonary Disease .
Philadelphia:
Hanley \r Belfus, Inc..
Gaya MLA
Rosenstock, Linda.
"Occupational Medicine: Occupational Pulmonary Disease".
Philadelphia:
Hanley \r Belfus, Inc.,
1987.
print.