APA (7th ed.) Citation

Usher, R., Bryant, I., & Johnston, R. (1997). Adult education and the postmodern challenge. Routledge.

Chicago Style (17th ed.) Citation

Usher, Robin, Ian Bryant, and Rennie Johnston. Adult Education and the Postmodern Challenge. London: Routledge, 1997.

MLA (9th ed.) Citation

Usher, Robin, et al. Adult Education and the Postmodern Challenge. Routledge, 1997.