Cita APA (7a ed.)

Smith, P. I. (1970). Industrial intelligence and espionage. Business Books.

Cita Chicago Style (17a ed.)

Smith, Paul Ignatius. Industrial Intelligence and Espionage. London: Business Books, 1970.

Cita MLA (9a ed.)

Smith, Paul Ignatius. Industrial Intelligence and Espionage. Business Books, 1970.