Cita APA (7th ed.)
Brouwer, L. E. J., Heyting, A., & Freudenthal, H. (1975). Collected Works: Vol. 1. 2. North-Holland Publ. Comp.
Cita Chicago (17th ed.)
Brouwer, Luitzen Egbertus Jan, Arend Heyting, i Hans Freudenthal. Collected Works: Vol. 1. 2. Amsterdam, Oxford: North-Holland Publ. Comp, 1975.
Cita MLA (9th ed.)
Brouwer, Luitzen Egbertus Jan, et al. Collected Works: Vol. 1. 2. North-Holland Publ. Comp, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.