Guildford Educational Services, Council for Educational Technology for the United Kingdom, Technician Education Council, Great Britain, & Twining, J. (1982). Open learning for technicians: Report of an investigation carried out by Guildford Educational Services Ltd for the Council for Educational Technology, The Technician Education Council and The Manpower Services Commission. Thornes.
Chicago (17e ed.) BronvermeldingGuildford Educational Services, Council for Educational Technology for the United Kingdom, Technician Education Council, Great Britain, en John Twining. Open Learning for Technicians: Report of an Investigation Carried Out by Guildford Educational Services Ltd for the Council for Educational Technology, The Technician Education Council and The Manpower Services Commission. Cheltenham: Thornes, 1982.
MLA (9e ed.) BronvermeldingGuildford Educational Services, et al. Open Learning for Technicians: Report of an Investigation Carried Out by Guildford Educational Services Ltd for the Council for Educational Technology, The Technician Education Council and The Manpower Services Commission. Thornes, 1982.