Cita APA (7a ed.)

Hacker, M. (1994). Winter numbers: Poems. W.W. Norton.

Cita Chicago Style (17a ed.)

Hacker, Marilyn. Winter Numbers: Poems. New York [etc.]: W.W. Norton, 1994.

Cita MLA (9a ed.)

Hacker, Marilyn. Winter Numbers: Poems. W.W. Norton, 1994.