Cita APA (7a ed.)

Spann, O., Paul, E., & Paul, C. (2011). Types of economic theory. Routledge.

Cita Chicago Style (17a ed.)

Spann, Othmar, Eden Paul, y Cedar Paul. Types of Economic Theory. Abingdon, Oxon: Routledge, 2011.

Cita MLA (8a ed.)

Spann, Othmar, et al. Types of Economic Theory. Routledge, 2011.