Shafer, C. (1985). Excellence in teaching with the seven laws: A contemporary abridgment of Gregory's seven laws of teaching. Baker.
芝加哥风格引文Shafer, Carl. Excellence in Teaching with the Seven Laws: A Contemporary Abridgment of Gregory's Seven Laws of Teaching. Grand Rapids: Baker, 1985.
MLA引文Shafer, Carl. Excellence in Teaching with the Seven Laws: A Contemporary Abridgment of Gregory's Seven Laws of Teaching. Baker, 1985.
警告：这些引文格式不一定是100％准确.