Citazione APA

Hill, C. E. (2004). Helping skills: Facilitating exploration, insight and action (2nd ed.). Taylor and Francis.

Stile di citazione Chicago

Hill, Clara E. Helping Skills: Facilitating Exploration, Insight and Action. 2nd ed. Washington: Taylor and Francis, 2004.

Citazione MLA

Hill, Clara E. Helping Skills: Facilitating Exploration, Insight and Action. 2nd ed. Taylor and Francis, 2004.