APA-viite (7. p.)

Vendler, H. H. (1969). On extended wings: Wallace Stevens' longer poems. Harvard University Press.

Chicago-viite (17. p.)

Vendler, Helen Hennessy. On Extended Wings: Wallace Stevens' Longer Poems. Cambridge, Mass: Harvard University Press, 1969.

MLA-viite (9. p.)

Vendler, Helen Hennessy. On Extended Wings: Wallace Stevens' Longer Poems. Harvard University Press, 1969.