Lua APA (7ú heag.)
ebrary, Inc, & Brandt, P. R. (2011). Psychology of optimism. Nova Science Publishers.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Phyllis R. Brandt. Psychology of Optimism. New York: Nova Science Publishers, 2011.
Lua MLA (9ú heag.)
ebrary, Inc, agus Phyllis R. Brandt. Psychology of Optimism. Nova Science Publishers, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.