Dyfyniad APA
Lakein, A. (1973). How to get control of your time and your life. Signet Book.
Dyfyniad Arddull Chicago
Lakein, Alan. How to Get Control of Your Time and Your Life. New York: Signet Book, 1973.
Dyfyniad MLA
Lakein, Alan. How to Get Control of Your Time and Your Life. Signet Book, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.