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APA Citation
Millard, D. E., Doody, K., Davis, H. C., Gilbert, L., Howard, Y., Tao, F., & Wills, G. (2008). (Semantic web) services for e-learning. International journal of knowledge and learning, 4, 298–315. http://access.bl.uk/ark:/81055/vdc_100073523051.0x000003