APA-referens (7:e uppl.)
Caplan, D. (2005). Questions of possibility: Contemporary poetry and poetic form. Oxford University Press.
Chicago-referens (17:e uppl.)
Caplan, David. Questions of Possibility: Contemporary Poetry and Poetic Form. New York: Oxford University Press, 2005.
MLA-referens (9:e uppl.)
Caplan, David. Questions of Possibility: Contemporary Poetry and Poetic Form. Oxford University Press, 2005.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.