Smalley, G., & Trent, J. (1990). The two sides of love: Using personality strengths to greatly improve your relationships. Tyndale.
Lua i Stíl Chicago (17ú heag.)Smalley, Gary, agus John Trent. The Two Sides of Love: Using Personality Strengths to Greatly Improve Your Relationships. Wheaton: Tyndale, 1990.
Lua MLA (9ú heag.)Smalley, Gary, agus John Trent. The Two Sides of Love: Using Personality Strengths to Greatly Improve Your Relationships. Tyndale, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.