HOWARD CAROLINE. (2004). DISTANCE LEARNING AND UNIVERSITY EFFECTIVENESS. INFORMATION SCIENCE.
芝加哥风格引文HOWARD CAROLINE. DISTANCE LEARNING AND UNIVERSITY EFFECTIVENESS. U S A: INFORMATION SCIENCE, 2004.
MLA引文HOWARD CAROLINE. DISTANCE LEARNING AND UNIVERSITY EFFECTIVENESS. INFORMATION SCIENCE, 2004.
警告：这些引文格式不一定是100％准确.