Armstrong, F. E. (1957). Book of the stock exchange (5th ed.). Pitman.
Cita Chicago (17th ed.)Armstrong, F E. Book of the Stock Exchange. 5th ed. Lond.: Pitman, 1957.
Cita MLA (8th ed.)Armstrong, F E. Book of the Stock Exchange. 5th ed. Pitman, 1957.
Atenció: Aquestes cites poden no estar 100% correctes.