Howard, R., & Robert Howard. (1980). Performance in a world of change: Perspective. U. Pr. of America.
Chicago-čujuhus (17. p.)Howard, Robert, juo Robert Howard. Performance in a World of Change: Perspective. Lanham: U. Pr. of America, 1980.
MLA-čujuhus (9. p.)Howard, Robert, juo Robert Howard. Performance in a World of Change: Perspective. U. Pr. of America, 1980.
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