Dyfyniad APA
Engstrom, T. W., & Mackenzie, R. A. (1967). Managing your time: Practical guidelines on the effective use of time ([1st ed.].). Zondervan Pub. House.
Dyfyniad Arddull Chicago
Engstrom, Ted W., and R. Alec Mackenzie. Managing Your Time: Practical Guidelines on the Effective Use of Time. [1st ed.]. Grand Rapids: Zondervan Pub. House, 1967.
Dyfyniad MLA
Engstrom, Ted W., and R. Alec Mackenzie. Managing Your Time: Practical Guidelines on the Effective Use of Time. [1st ed.]. Zondervan Pub. House, 1967.
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