Παραπομπή σε μορφή APA (7η εκδ.)

Overs, W. H. (1927). Sketches in ebony and ivory. Pub. for the National Council of the Protestant Episcopal Church by Church Missions Pub. Co..

Παραπομπή σε μορφή Chicago (17η εκδ.)

Overs, Walter H. Sketches in Ebony and Ivory. Hartford, Conn.: Pub. for the National Council of the Protestant Episcopal Church by Church Missions Pub. Co., 1927.

Παραπομπή σε μορφή MLA (8th εκδ.)

Overs, Walter H. Sketches in Ebony and Ivory. Pub. for the National Council of the Protestant Episcopal Church by Church Missions Pub. Co., 1927.