APA (7th ed.) Citation

Perry, W., & Rumble, G. (1987). A short guide to distance education. Internat. Extension College.

Chicago Style (17th ed.) Citation

Perry, Walter, and Greville Rumble. A Short Guide to Distance Education. Cambridge: Internat. Extension College, 1987.

MLA (9th ed.) Citation

Perry, Walter, and Greville Rumble. A Short Guide to Distance Education. Internat. Extension College, 1987.