Cita APA (7th ed.)

Firmenich-Richartz, E. (1916). Die Brüder Boisserée: Eduard Firmenich-Richartz. Diederichs.

Cita Chicago (17th ed.)

Firmenich-Richartz, Eduard. Die Brüder Boisserée: Eduard Firmenich-Richartz. Jena: Diederichs, 1916.

Cita MLA (8th ed.)

Firmenich-Richartz, Eduard. Die Brüder Boisserée: Eduard Firmenich-Richartz. Diederichs, 1916.