Παραπομπή σε μορφή APA (7η εκδ.)

O'Higgins, B., & Ó Monacháin, A. (1955). The little book of the twelve promises: (the nine Fridays). published by Brian O'Híggins, 56 Parnell Square.

Παραπομπή σε μορφή Chicago (17η εκδ.)

O'Higgins, Brian, και Ailbhe Ó Monacháin. The Little Book of the Twelve Promises: (the Nine Fridays). Dublin: published by Brian O'Híggins, 56 Parnell Square, 1955.

Παραπομπή σε μορφή MLA (8th εκδ.)

O'Higgins, Brian, και Ailbhe Ó Monacháin. The Little Book of the Twelve Promises: (the Nine Fridays). published by Brian O'Híggins, 56 Parnell Square, 1955.