Cita APA (7a ed.)
Nielsen, H. D. (1991). Using distance education extend and improve teaching in developing countries.
Cita estilo Chicago (17a ed.)
Nielsen, H. Dean. Using Distance Education Extend and Improve Teaching in Developing Countries. 1991.
Cita MLA (9a ed.)
Nielsen, H. Dean. Using Distance Education Extend and Improve Teaching in Developing Countries. 1991.
Precaución: Estas citas no son 100% exactas.