Παραπομπή σε μορφή APA (7η εκδ.)

Kassler, R. (1978). Selected methods in workers' education: An instructional aid for workers' educators and trade unionists. International Labour Office.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Kassler, R. Selected Methods in Workers' Education: An Instructional Aid for Workers' Educators and Trade Unionists. Geneva: International Labour Office, 1978.

Παραπομπή σε μορφή MLA (9th εκδ.)

Kassler, R. Selected Methods in Workers' Education: An Instructional Aid for Workers' Educators and Trade Unionists. International Labour Office, 1978.