APA-viite (7. p.)
Costello, B. (2003). Shifting ground: Reinventing landscape in modern American poetry. Harvard University Press.
Chicago-viite (17. p.)
Costello, Bonnie. Shifting Ground: Reinventing Landscape in Modern American Poetry. Cambridge: Harvard University Press, 2003.
MLA-viite (9. p.)
Costello, Bonnie. Shifting Ground: Reinventing Landscape in Modern American Poetry. Harvard University Press, 2003.
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