Benton, M. (1971). Library and Reference Facilities in the Area of the District of Columbia. Eighth Edition.
Chicago-Zitierstil (17. Ausg.)Benton, Mildred. Library and Reference Facilities in the Area of the District of Columbia. Eighth Edition. 1971.
MLA-Zitierstil (9. Ausg.)Benton, Mildred. Library and Reference Facilities in the Area of the District of Columbia. Eighth Edition. 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.