Cita APA (7th ed.)
Sikorski, R., & Rasiowa, H. (1963). The Mathematics of metamathematics.
Cita Chicago (17th ed.)
Sikorski, Roman, i Helena Rasiowa. The Mathematics of Metamathematics. 1963.
Cita MLA (9th ed.)
Sikorski, Roman, i Helena Rasiowa. The Mathematics of Metamathematics. 1963.
Atenció: Aquestes cites poden no estar 100% correctes.