APA (7th ed.) Citation

Satish Kumar & Schumacher, E. F. (1981). The Schumacher lectures. Harper Colophon Books.

Chicago Style (17th ed.) Citation

Satish Kumar and E. F. Schumacher. The Schumacher Lectures. New York: Harper Colophon Books, 1981.

MLA (9th ed.) Citation

Satish Kumar and E. F. Schumacher. The Schumacher Lectures. Harper Colophon Books, 1981.