Citazione Stile APA (7a Edizione)

Nathan, E. D. (1979). 24 questions in group leadership (2nd ed.). Addison-Wesley.

Citazione stile Chigago Style (17a edizione)

Nathan, Ernest D. 24 Questions in Group Leadership. 2nd ed. Massachusetts: Addison-Wesley, 1979.

Citatione MLA (9a ed.)

Nathan, Ernest D. 24 Questions in Group Leadership. 2nd ed. Addison-Wesley, 1979.