Cita APA (7th ed.)
Hieke, A., & Leitgeb, H. (2009). Reduction, abstraction, analysis. Ontos Verlag.
Cita Chicago (17th ed.)
Hieke, Alexander, i Hannes Leitgeb. Reduction, Abstraction, Analysis. Frankfurt: Ontos Verlag, 2009.
Cita MLA (9th ed.)
Hieke, Alexander, i Hannes Leitgeb. Reduction, Abstraction, Analysis. Ontos Verlag, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.