Cita APA

Helliwell,J F. (1976). Aggregate investment: Selected readings. Penguin Education.

Chicago Edition Citation

Helliwell,J F. Aggregate Investment: Selected Readings. England: Penguin Education, 1976.

Cita MLA

Helliwell,J F. Aggregate Investment: Selected Readings. Penguin Education, 1976.

Atenció: Aquestes cites poden no estar 100% correctes.