The research aims to comprehend the knowledge and utilization of electronic journal (Proquest, Science Direct, EBSCOhost, dan Cab Direct) subscribed by library of Institut Pertanian Bogor that have been performed by students as reference source in thesis writing, and obstacles faced while looking for the information. The research applies descriptive research with quantitative approach. Based on the data acquired: (1) The students’ knowledge toward electronic journal subscribed is adequately high. 87,9% students realize existence of electronic journal service, 81,8% reference resource uses electronic media, and 49,5% utilizes electronic journal; (2) The electronic journal utilization level is 86,2% which utilizes electronic journal. Electronic journal utilization level as reference material is relatively high, because from 86,2% students which utilize electronic journal, 40% utilizes it 2-3 times in a month. 34,7% utilizes electronic journal with duration less than 2 hours, with downloading electronic journal collection searched, 34,7% uses 2 articles as reference material for thesis; (3) Obstacles in utilizing electronic journal are 52% caused by electronic journal collection mostly using English, and searched collection are not available. Although there are some difficulties, they keep utilize the electronic journal.