Corey, G., & Corey, M. S. (1990). I never knew I had a choice (4th.ed.). Brooks/Cole.
Citazione stile Chigago Style (17a edizione)Corey, Gerald, e Marianne Schneider Corey. I Never Knew I Had a Choice. 4th.ed. Pacific Grove: Brooks/Cole, 1990.
Citatione MLA (9a ed.)Corey, Gerald, e Marianne Schneider Corey. I Never Knew I Had a Choice. 4th.ed. Brooks/Cole, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.