Dobson, F. R., & Virgo, H. E. (1970). Canada and the United States. English Univ. Press.
Chicago Style aipamenaDobson, F. R., and H. E. Virgo. Canada and the United States. London: English Univ. Press, 1970.
MLA aipamenaDobson, F. R., and H. E. Virgo. Canada and the United States. English Univ. Press, 1970.
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