APA (7e ed.) Bronvermelding

Gertrude, t. G., & Barratt, A. (1999). The herald of God's loving kindness. Cistercian Publications.

Chicago (17e ed.) Bronvermelding

Gertrude, the Great, en Alexandra Barratt. The Herald of God's Loving Kindness. Kalamazoo, Mich.: Cistercian Publications, 1999.

MLA (8e ed.) Bronvermelding

Gertrude, the Great, en Alexandra Barratt. The Herald of God's Loving Kindness. Cistercian Publications, 1999.