Smalley, G., & Trent, J. (1990). The two sides of love: Using personality strengths to greatly improve your relationships. Tyndale.
Chicago-viite (17. p.)Smalley, Gary, ja John Trent. The Two Sides of Love: Using Personality Strengths to Greatly Improve Your Relationships. Wheaton: Tyndale, 1990.
MLA-viite (9. p.)Smalley, Gary, ja John Trent. The Two Sides of Love: Using Personality Strengths to Greatly Improve Your Relationships. Tyndale, 1990.
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