Cita APA (7th ed.)

Black, J. W., & Irwin, R. (1969). Voice and diction: Phonation and phonology. C.E. Merrill.

Cita Chicago (17th ed.)

Black, John Wilson, i Ruth Irwin. Voice and Diction: Phonation and Phonology. Columbus, Ohio: C.E. Merrill, 1969.

Cita MLA (9th ed.)

Black, John Wilson, i Ruth Irwin. Voice and Diction: Phonation and Phonology. C.E. Merrill, 1969.