Παραπομπή σε μορφή APA (7η εκδ.)

Gairdner, W. H. T. (1980). Theories, practices and traning systems of a Sufi school. The Society for Sufi Studies.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gairdner, W. H. T. Theories, Practices and Traning Systems of a Sufi School. London: The Society for Sufi Studies, 1980.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gairdner, W. H. T. Theories, Practices and Traning Systems of a Sufi School. The Society for Sufi Studies, 1980.