APA (7th ed.) Citation

Harris, D. (1987). Opennes and closure in distance education (1. publ.). Falmer Pr.

Chicago Style (17th ed.) Citation

Harris, David. Opennes and Closure in Distance Education. 1. publ. London u.a: Falmer Pr, 1987.

MLA (9th ed.) Citation

Harris, David. Opennes and Closure in Distance Education. 1. publ. Falmer Pr, 1987.

Warning: These citations may not always be 100% accurate.