Dale, P., & Wolf, J. C. (1988). Speech communication for international students. Prentice Hall Regents.
Citazione stile Chigago Style (17a edizione)Dale, Paulette, e James C. Wolf. Speech Communication for International Students. Englewood Cliffs, N. J: Prentice Hall Regents, 1988.
Citatione MLA (9a ed.)Dale, Paulette, e James C. Wolf. Speech Communication for International Students. Prentice Hall Regents, 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.