Cite
The Use of Extracts in Information Services.
MLA
Helmuth, Nancy A. “The Use of Extracts in Information Services.” Journal of the American Society for Information Science, vol. 22, no. 6, Nov. 1971, pp. 382–89. EBSCOhost, https://doi.org/10.1002/asi.4630220604.
APA
Helmuth, N. A. (1971). The Use of Extracts in Information Services. Journal of the American Society for Information Science, 22(6), 382–389. https://doi.org/10.1002/asi.4630220604
Chicago
Helmuth, Nancy A. 1971. “The Use of Extracts in Information Services.” Journal of the American Society for Information Science 22 (6): 382–89. doi:10.1002/asi.4630220604.