@article{
ai-68-OLC179405958X,
title = {The dimensions of reference and instructional services and the challenge of "keeping up"},
journal = {Reference services review},
volume = {36},
number = {2},
author = {Watstein, Sarah Barbara},
year = {2008},
issn = {0090-7324},
url = {https://katalog.fid-bbi.de/Record/ai-68-OLC179405958X}
}