Cummings, M. M. (1987). The Economics of Managing Library Service.
Citação norma ChicagoCummings, Martin M. The Economics of Managing Library Service. 1987.
ציטוט MLACummings, Martin M. The Economics of Managing Library Service. 1987.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.