Cita APA (7th ed.)

USHER, R., BRYANT, I., & JOHNSTON, R. (1997). Adult education and the postmodern challenge: Learning beyond the limits. Routledge.

Cita Chicago (17th ed.)

USHER, Robin, Ian BRYANT, i Rennie JOHNSTON. Adult Education and the Postmodern Challenge: Learning Beyond the Limits. london: Routledge, 1997.

Cita MLA (9th ed.)

USHER, Robin, et al. Adult Education and the Postmodern Challenge: Learning Beyond the Limits. Routledge, 1997.