Παραπομπή σε μορφή APA (7η εκδ.)

Willett, H. L. (1931). The daily altar: An aid to private devotion and family worship. s.n.].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Willett, Herbert Lockwood. The Daily Altar: An Aid to Private Devotion and Family Worship. [S.l: s.n.], 1931.

Παραπομπή σε μορφή MLA (9th εκδ.)

Willett, Herbert Lockwood. The Daily Altar: An Aid to Private Devotion and Family Worship. s.n.], 1931.