Proctor, E. (2008). Gypsy dialects: A selective annotated bibliography of materials for the practical study of Romani. University of Hertfordshire Press.

Proctor, Edward. Gypsy Dialects: A Selective Annotated Bibliography of Materials for the Practical Study of Romani. Hatfield, Hertfordshire: University of Hertfordshire Press, 2008.

Proctor, Edward. Gypsy Dialects: A Selective Annotated Bibliography of Materials for the Practical Study of Romani. University of Hertfordshire Press, 2008.