Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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