Cita APA

Kempfer, H. (1996). How to reduce dropouts in distance education (1a. ed.). San José, C. R.: EUNED.

Citación estilo Chicago

Kempfer, Homer. How to Reduce Dropouts in Distance Education. 1a. ed. San José, C. R.: EUNED, 1996.

Cita MLA

Kempfer, Homer. How to Reduce Dropouts in Distance Education. 1a. ed. San José, C. R.: EUNED, 1996.