APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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