[101] Collard, s. Royer.
Brockhaus-1837: Royer-Collard
Brockhaus-1911: Royer-Collard
Eisler-1912: Royer-Collard, Pierre Paul
Herder-1854: Royer-Collard
Meyers-1905: Royer-Collard
Pierer-1857: Royer Collard · Collard