APA-ийн эшлэл(7 дахь хэвлэлт)
ebrary, Inc, Backhouse, C., & Flaherty, D. H. (1992). Challenging times: The women's movement in Canada and the United States. McGill-Queen's University Press.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
ebrary, Inc, Constance Backhouse, ба David H. Flaherty. Challenging Times: The Women's Movement in Canada and the United States. Montreal ; Buffalo: McGill-Queen's University Press, 1992.
MLA -ийн эшлэл (9 дэх хэвлэлт)
ebrary, Inc, et al. Challenging Times: The Women's Movement in Canada and the United States. McGill-Queen's University Press, 1992.
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