Cita APA (7a ed.)

Whetnall, E., Fry, D. B., & Niven, R. B. (1970). Learning to hear. William Heinemann Medical Books.

Cita Chicago Style (17a ed.)

Whetnall, Edith, Dennis Butler Fry, y R. B. Niven. Learning to Hear. London: William Heinemann Medical Books, 1970.

Cita MLA (8a ed.)

Whetnall, Edith, et al. Learning to Hear. William Heinemann Medical Books, 1970.