Williams, R. (1989). The trusting heart great news about tipe a behavior. Times Books.
Lua i Stíl Chicago (17ú heag.)Williams, Redford. The Trusting Heart Great News About Tipe a Behavior. Times Books, 1989.
Lua MLA (9ú heag.)Williams, Redford. The Trusting Heart Great News About Tipe a Behavior. Times Books, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.