Harris, W. J. A., Williams, J. D. S., & Wiedhaup, C. J. J. (1977). A handbook on distance education: (a handbook to brief and help administrators, educationalists, politicians and all others engaged in distance education in countries seeking to introduce, extend or improve correspondence education for adults). Department of Adult and Higher Education, University of Manchester.
Cita Chicago (17th ed.)Harris, W. J. A., John D. S. Williams, i C. J. J. Wiedhaup. A Handbook on Distance Education: (a Handbook to Brief and Help Administrators, Educationalists, Politicians and All Others Engaged in Distance Education in Countries Seeking to Introduce, Extend or Improve Correspondence Education for Adults). Manchester: Department of Adult and Higher Education, University of Manchester, 1977.
Cita MLA (8th ed.)Harris, W. J. A., et al. A Handbook on Distance Education: (a Handbook to Brief and Help Administrators, Educationalists, Politicians and All Others Engaged in Distance Education in Countries Seeking to Introduce, Extend or Improve Correspondence Education for Adults). Department of Adult and Higher Education, University of Manchester, 1977.