USHER, R., BRYANT, I., & JOHNSTON, R. (1997). Adult education and the postmodern challenge: Learning beyond the limits. Routledge.
芝加哥风格引文USHER, Robin, Ian BRYANT, 与 Rennie JOHNSTON. Adult Education and the Postmodern Challenge: Learning Beyond the Limits. london: Routledge, 1997.
MLA引文USHER, Robin, et al. Adult Education and the Postmodern Challenge: Learning Beyond the Limits. Routledge, 1997.
警告：这些引文格式不一定是100％准确.