Ellsworth, R. E. (1960). The state of the library art. Graduate School of Library Service, Rutgers - The State University.
Chicago-Zitierstil (17. Ausg.)Ellsworth, Ralph E. The State of the Library Art. New Brunswick, N.J: Graduate School of Library Service, Rutgers - The State University, 1960.
MLA-Zitierstil (9. Ausg.)Ellsworth, Ralph E. The State of the Library Art. Graduate School of Library Service, Rutgers - The State University, 1960.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.