Johnson, D. W. (1993). Reflecting on the Public Library Data Service Project: Public Libraries over Five Years, 1987-91.
Chicago-Zitierstil (17. Ausg.)Johnson, Debra Wilcox. Reflecting on the Public Library Data Service Project: Public Libraries over Five Years, 1987-91. 1993.
MLA-Zitierstil (9. Ausg.)Johnson, Debra Wilcox. Reflecting on the Public Library Data Service Project: Public Libraries over Five Years, 1987-91. 1993.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.