Cita APA (7a ed.)

O'Neill, E. (1955). Long day's journey into night. Yale University Press.

Cita Chicago Style (17a ed.)

O'Neill, Eugene. Long Day's Journey into Night. London: Yale University Press, 1955.

Cita MLA (8a ed.)

O'Neill, Eugene. Long Day's Journey into Night. Yale University Press, 1955.