Bridges, D. (1987). Varieties of constructive mathematics. Cambridge Univ. Pr.
Lua i Stíl Chicago (17ú heag.)Bridges, Douglas. Varieties of Constructive Mathematics. Cambridge Univ. Pr, 1987.
Lua MLA (9ú heag.)Bridges, Douglas. Varieties of Constructive Mathematics. Cambridge Univ. Pr, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.