Oppenheim, C., & Citroen, C. L. (1989). Perspectives in information management 1. Butterworths.
Chicago-čujuhus (17. p.)Oppenheim, Charles, juo Charles L. Citroen. Perspectives in Information Management 1. London: Butterworths, 1989.
MLA-čujuhus (9. p.)Oppenheim, Charles, juo Charles L. Citroen. Perspectives in Information Management 1. Butterworths, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.