APA-viite

Halm, G. N. (1968). Economic systems: A comparative analysis. Oxford & IBH publishing company.

Chicago-tyylinen lähdeviittaus

Halm, George N. Economic Systems: A Comparative Analysis. Newdelhi: Oxford & IBH publishing company, 1968.

MLA-viite

Halm, George N. Economic Systems: A Comparative Analysis. Oxford & IBH publishing company, 1968.