Cita APA (7th ed.)

Ruoff, M. (2008). Hermann von Helmholtz: Michael Ruoff. Fink.

Cita Chicago (17th ed.)

Ruoff, Michael. Hermann Von Helmholtz: Michael Ruoff. Paderborn: Fink, 2008.

Cita MLA (8th ed.)

Ruoff, Michael. Hermann Von Helmholtz: Michael Ruoff. Fink, 2008.