Duffy, A. (1936). The poetry of duty. National Council of Catholic Men.
Stile di citazione ChicagoDuffy, Alfred. The Poetry of Duty. Washington, D.C.: National Council of Catholic Men, 1936.
Citazione MLADuffy, Alfred. The Poetry of Duty. National Council of Catholic Men, 1936.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.