APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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