MLA
John Abresch, et al. "Reference Services." Integrating Geographic Information Systems into Library Services: A Guide for Academic Libraries, IGI Global, 2008, pp.175-201. https://doi.org/10.4018/978-1-59904-726-3.ch007
APA
J. Abresch, A. Hanson, S. Heron, & P. Reehling (2008). Reference Services. IGI Global. https://doi.org/10.4018/978-1-59904-726-3.ch007
Chicago
John Abresch, et al. "Reference Services." In Integrating Geographic Information Systems into Library Services: A Guide for Academic Libraries. Hershey, PA: IGI Global, 2008. https://doi.org/10.4018/978-1-59904-726-3.ch007
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