Cita APA (7a ed.)

Holmes, B., & Gardner, J. (2006). E-learning: Concepts and practice. SAGE Publications.

Cita Chicago Style (17a ed.)

Holmes, Bryn, y John Gardner. E-learning: Concepts and Practice. London ; Thousand Oaks, Calif.: SAGE Publications, 2006.

Cita MLA (9a ed.)

Holmes, Bryn, y John Gardner. E-learning: Concepts and Practice. SAGE Publications, 2006.