Lua APA (7ú heag.)
Donzé, P., & Watkins, R. (2015). History of the swiss watch industry: From jacques david to nicolas hayek (Third edition.). Peter Lang.
Lua i Stíl Chicago (17ú heag.)
Donzé, Pierre-Yves, agus Richard Watkins. History of the Swiss Watch Industry: From Jacques David to Nicolas Hayek. Third edition. Bern, Switzerland: Peter Lang, 2015.
Lua MLA (9ú heag.)
Donzé, Pierre-Yves, agus Richard Watkins. History of the Swiss Watch Industry: From Jacques David to Nicolas Hayek. Third edition. Peter Lang, 2015.
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