Cita APA (7a ed.)

Warneck, K. E. (1848). Friedrich Hoepfner.

Cita Chicago Style (17a ed.)

Warneck, Karl Eduard. Friedrich Hoepfner. [Gdańsk, 1848.

Cita MLA (9a ed.)

Warneck, Karl Eduard. Friedrich Hoepfner. 1848.