Cita APA (7a ed.)

Greenhalgh, C., & Schautschick, P. (2013). Empirical studies of trade marks - the existing economic literature. University of Oxford.

Cita Chicago Style (17a ed.)

Greenhalgh, C., y P. Schautschick. Empirical Studies of Trade Marks - the Existing Economic Literature. University of Oxford, 2013.

Cita MLA (9a ed.)

Greenhalgh, C., y P. Schautschick. Empirical Studies of Trade Marks - the Existing Economic Literature. University of Oxford, 2013.