Cita APA (7a ed.)
Lipsey, R. G., & Harbury, C. (1990). First Principles of Economics (1. ed.). Weidenfeld and Nicolson.
Cita Chicago Style (17a ed.)
Lipsey, Richard G., y Colin Harbury. First Principles of Economics. 1. ed. London: Weidenfeld and Nicolson, 1990.
Cita MLA (9a ed.)
Lipsey, Richard G., y Colin Harbury. First Principles of Economics. 1. ed. Weidenfeld and Nicolson, 1990.
Precaución: Estas citas no son 100% exactas.