Institute for Advanced Philosophic Research. (2002). Contemporary Philosophy. Realia.
Citação do estilo Chicago (17ª ed.)Institute for Advanced Philosophic Research. Contemporary Philosophy. Boulder, Colo: Realia, 2002.
Citação MLA (8ª ed.)Institute for Advanced Philosophic Research. Contemporary Philosophy. Realia, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.