Allen, G. (1970). British industries and their organization. Longman.
Cita Chicago (17th ed.)Allen, G.C. British Industries and Their Organization. London: Longman, 1970.
Cita MLA (9th ed.)Allen, G.C. British Industries and Their Organization. Longman, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.