APA (7. basım) Alıntı

Duffy, A. (1936). The poetry of duty. National Council of Catholic Men.

Chicago Style (17. basım) Atıf

Duffy, Alfred. The Poetry of Duty. Washington, D.C.: National Council of Catholic Men, 1936.

MLA (8th ed.) Atıf

Duffy, Alfred. The Poetry of Duty. National Council of Catholic Men, 1936.