Ladd, B. (1977). National Inventory of Library Needs, 1975. Resources Needed for Public and Academic Libraries and Public School Library/Media Centers.
Chicago-Zitierstil (17. Ausg.)Ladd, Boyd. National Inventory of Library Needs, 1975. Resources Needed for Public and Academic Libraries and Public School Library/Media Centers. 1977.
MLA-Zitierstil (9. Ausg.)Ladd, Boyd. National Inventory of Library Needs, 1975. Resources Needed for Public and Academic Libraries and Public School Library/Media Centers. 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.