Παραπομπή σε μορφή APA (7η εκδ.)

Harper, J. R. (1915). A survey of opportunities for vocational education in and near Philadelphia. Public Education Association.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Harper, Jane Roberts. A Survey of Opportunities for Vocational Education in and Near Philadelphia. Philadelphia: Public Education Association, 1915.

Παραπομπή σε μορφή MLA (8th εκδ.)

Harper, Jane Roberts. A Survey of Opportunities for Vocational Education in and Near Philadelphia. Public Education Association, 1915.