Dyfyniad APA

Troelstra, A., & Dalen, V. D. (1991). Constructivism in Mathematics: An Introduction. North - Holland.

Dyfyniad Arddull Chicago

Troelstra, A.S, and Van D. Dalen. Constructivism in Mathematics: An Introduction. Amsterdam: North - Holland, 1991.

Dyfyniad MLA

Troelstra, A.S, and Van D. Dalen. Constructivism in Mathematics: An Introduction. North - Holland, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.