Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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