Martin, R. J. (1980). Teaching through encouragement. Prentice-Hall.
芝加哥风格引文Martin, Robert J. Teaching Through Encouragement. Englewood Cliffs: Prentice-Hall, 1980.
MLA引文Martin, Robert J. Teaching Through Encouragement. Prentice-Hall, 1980.
警告：这些引文格式不一定是100％准确.