Engel, H. O. (1990). Academic occupational medicine at the crossroads.
Citação norma ChicagoEngel, H O. Academic Occupational Medicine At the Crossroads. 1990.
ציטוט MLAEngel, H O. Academic Occupational Medicine At the Crossroads. 1990.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.