Cita APA (7a ed.)

Bolzano, B., Rootselaar, B. v., & Berg, J. (2007). Miscellanea mathematica: 21. Friedrich Frommann, Günther Holzboog.

Cita Chicago Style (17a ed.)

Bolzano, Bernard, Bob van Rootselaar, y Jan Berg. Miscellanea Mathematica: 21. Stuttgart-Bad Cannstatt: Friedrich Frommann, Günther Holzboog, 2007.

Cita MLA (9a ed.)

Bolzano, Bernard, et al. Miscellanea Mathematica: 21. Friedrich Frommann, Günther Holzboog, 2007.