Cita APA (7a ed.)

Adler Hellman, J. (2003). The riddle of distance education: Promise, problems and applications for development. UNRISD.

Cita Chicago Style (17a ed.)

Adler Hellman, Judith. The Riddle of Distance Education: Promise, Problems and Applications for Development. Ginebra: UNRISD, 2003.

Cita MLA (8a ed.)

Adler Hellman, Judith. The Riddle of Distance Education: Promise, Problems and Applications for Development. UNRISD, 2003.