Cita APA

Mercer, D. F. (1982). Distance education: An emergin university instructional system. Madrid: UNED.

Citación estilo Chicago

Mercer, David F. Distance Education: An Emergin University Instructional System. Madrid: UNED, 1982.

Cita MLA

Mercer, David F. Distance Education: An Emergin University Instructional System. Madrid: UNED, 1982.

Precaución: Estas citas no son 100% exactas.