Petri, H. L. (1991). Motivation: Theory, research and applications (3rd ed.). Wadsworth.
芝加哥风格引文Petri, Herbert L. Motivation: Theory, Research and Applications. 3rd ed. Belmont, California: Wadsworth, 1991.
MLA引文Petri, Herbert L. Motivation: Theory, Research and Applications. 3rd ed. Wadsworth, 1991.
警告：这些引文格式不一定是100％准确.