Cita APA

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

Chicago Style Citation

Emery, F. E. Systems Thinking. England: Penguin Books, 1969.

Cita MLA

Emery, F. E. Systems Thinking. England: Penguin Books, 1969.

Atenció: Aquestes cites poden no estar 100% correctes.