Cita APA (7a ed.)

Emery, F. E. (1969). Systems thinking: Selected readings. Penguin Books.

Cita Chicago Style (17a ed.)

Emery, F. E. Systems Thinking: Selected Readings. Hardmondsworth: Penguin Books, 1969.

Cita MLA (9a ed.)

Emery, F. E. Systems Thinking: Selected Readings. Penguin Books, 1969.