Cita APA (7th ed.)

Open University, Schools Council (Great Britain), & Ashton, P. M. E. (1980). Continuing evaluation. Open University.

Cita Chicago (17th ed.)

Open University, Schools Council (Great Britain), i Patricia M. E. Ashton. Continuing Evaluation. Milton Keynes: Open University, 1980.

Cita MLA (8th ed.)

Open University, et al. Continuing Evaluation. Open University, 1980.