Παραπομπή σε μορφή APA (7η εκδ.)

Spencer, P. F. (1994). As a seal upon your heart: The life of St Paul of the Cross, founder of the Passionists. St Pauls.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Spencer, Paul Francis. As a Seal upon Your Heart: The Life of St Paul of the Cross, Founder of the Passionists. Middlegreen, Slough, [England]: St Pauls, 1994.

Παραπομπή σε μορφή MLA (8th εκδ.)

Spencer, Paul Francis. As a Seal upon Your Heart: The Life of St Paul of the Cross, Founder of the Passionists. St Pauls, 1994.