Firmenich-Richartz, E. (1916). Die Brüder Boisserée: Eduard Firmenich-Richartz. Diederichs.
Lua i Stíl Chicago (17ú heag.)Firmenich-Richartz, Eduard. Die Brüder Boisserée: Eduard Firmenich-Richartz. Jena: Diederichs, 1916.
Lua MLA (8ú heag.)Firmenich-Richartz, Eduard. Die Brüder Boisserée: Eduard Firmenich-Richartz. Diederichs, 1916.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.