APA
Elder L., . (2006). 25 Days to Better Thinking & Better Living. : Prentice Hall Professional.
Chicago
Elder Linda, . 2006. 25 Days to Better Thinking & Better Living. : Prentice Hall Professional.
Harvard
Elder L., . (2006). 25 Days to Better Thinking & Better Living. : Prentice Hall Professional.
MLA
Elder Linda, . 25 Days to Better Thinking & Better Living. : Prentice Hall Professional. 2006.