APA (7th ed.) Citation

Schumacher, E. F., & Kumar, S. (1980). The Schumacher lectures. Blond & Briggs.

Chicago Style (17th ed.) Citation

Schumacher, E. F., and Satish Kumar. The Schumacher Lectures. London: Blond & Briggs, 1980.

MLA (9th ed.) Citation

Schumacher, E. F., and Satish Kumar. The Schumacher Lectures. Blond & Briggs, 1980.

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