Cita APA (7a ed.)

Emery, F. E. (1969). Systems Thinking: Selected readings (1st. 1969; Reprinted 1970.). Penguin Books.

Cita Chicago Style (17a ed.)

Emery, F. E. Systems Thinking: Selected Readings. 1st. 1969; Reprinted 1970. Harmondsworth, Middlesex: Penguin Books, 1969.

Cita MLA (9a ed.)

Emery, F. E. Systems Thinking: Selected Readings. 1st. 1969; Reprinted 1970. Penguin Books, 1969.