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Online qualification exam system OQES |
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| APA | (2007). Online qualification exam system OQES. (Graduation Project (bachelor), Philadelphia University). | ||||
| MLA | . Online qualification exam system OQES. Graduation Project (bachelor). Philadelphia University, 2007, | ||||
| Harvard | 2007, Online qualification exam system OQES (Graduation Project (bachelor), Philadelphia University). | ||||
| Chicago | "Online qualification exam system OQES." Graduation Project (bachelor)., Philadelphia University, 2007. | ||||