Shephard, N. (2009). Income contingent tuition fees for universities. University of Oxford.
芝加哥风格引文Shephard, N. Income Contingent Tuition Fees for Universities. University of Oxford, 2009.
MLA引文Shephard, N. Income Contingent Tuition Fees for Universities. University of Oxford, 2009.
警告：这些引文格式不一定是100％准确.