Usher, R., Bryant, I., & Johnston, R. (1997). Adult education and the postmodern challenge. Routledge.
Chicago Style (17. basım) AtıfUsher, Robin, Ian Bryant, ve Rennie Johnston. Adult Education and the Postmodern Challenge. London: Routledge, 1997.
MLA (9th ed.) AtıfUsher, Robin, et al. Adult Education and the Postmodern Challenge. Routledge, 1997.
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