Dybjer, P., Lindstrm, S., Palmgren, E., & Sundholm, G. (2012). Epistemology versus Ontology: Essays on the Philosophy and Foundations of Mathematics in Honour of Per Martin-Lf. Springer Netherlands : Imprint: Springer. https://doi.org/10.1007/978-94-007-4435-6
Chicago-viite (17. p.)Dybjer, P., Sten Lindstrm, Erik Palmgren, ja G. Sundholm. Epistemology Versus Ontology: Essays on the Philosophy and Foundations of Mathematics in Honour of Per Martin-Lf. Dordrecht: Springer Netherlands : Imprint: Springer, 2012. https://doi.org/10.1007/978-94-007-4435-6.
MLA-viite (9. p.)Dybjer, P., et al. Epistemology Versus Ontology: Essays on the Philosophy and Foundations of Mathematics in Honour of Per Martin-Lf. Springer Netherlands : Imprint: Springer, 2012. https://doi.org/10.1007/978-94-007-4435-6.