Gress, J. R., & Purpel, D. E. (1978). Curriculum: An introduction to the field. McCutchan.
芝加哥风格引文Gress, James R., 与 David E. Purpel. Curriculum: An Introduction to the Field. California: McCutchan, 1978.
MLA引文Gress, James R., 与 David E. Purpel. Curriculum: An Introduction to the Field. McCutchan, 1978.
警告：这些引文格式不一定是100％准确.