Παραπομπή σε μορφή APA (7η εκδ.)

Liebergen, P. M. (2002). He prays alone: Traditional American spiritual : for SATB voices, accompanied, with optional oboe or clarinet. Alfred Pub.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Liebergen, Patrick M. He Prays Alone: Traditional American Spiritual : For SATB Voices, Accompanied, with Optional Oboe or Clarinet. [S.l.]: Alfred Pub, 2002.

Παραπομπή σε μορφή MLA (9th εκδ.)

Liebergen, Patrick M. He Prays Alone: Traditional American Spiritual : For SATB Voices, Accompanied, with Optional Oboe or Clarinet. Alfred Pub, 2002.