APA (7th ed.) Citation

Spencer, D. C. (1980). Thinking about open learning systems. Council for Educational Technology.

Chicago Style (17th ed.) Citation

Spencer, D. C. Thinking About Open Learning Systems. London: Council for Educational Technology, 1980.

MLA (9th ed.) Citation

Spencer, D. C. Thinking About Open Learning Systems. Council for Educational Technology, 1980.

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