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Caux, Emmanuel (2011). "Annuaire des étalons Boulonnais"(PDF) (in French) (21st ed.). Espaces naturels régionaux. pp. 10–18. Archived from the original(PDF) on 2016-03-04. Retrieved 2012-05-09.
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Caux, Emmanuel (2011). "Annuaire des étalons Boulonnais"(PDF) (in French) (21st ed.). Espaces naturels régionaux. pp. 3–4. Archived from the original(PDF) on 2016-03-04. Retrieved 2012-05-09.
Caux, Emmanuel (2011). "Annuaire des étalons Boulonnais"(PDF) (in French) (21st ed.). Espaces naturels régionaux. pp. 10–18. Archived from the original(PDF) on 2016-03-04. Retrieved 2012-05-09.