Coba jelasin Lihat pula dari Gagasan dong

Patricia A. Easton (ed.), Logic and the Workings of the Mind. The Logic of Ideas and Faculty Psychology in Early Modern Philosophy (Atascadero, Calif.: Ridgeview 1997)

Pierre Garin, La Théorie de l'idée suivant l'école thomiste (Paris 1932)

Marc A. High, Idea and Ontology. An Essay in Early Modern Metaphysics of Ideas ( Pennsylvania State University Press, 2008)

Lawrence Lessig, The Future of Ideas (New York 2001)

Paul Natorp, Platons Ideenlehre (Leipzig 1930)

W. D. Ross, Plato's Theory of Ideas (Oxford 1951)

Peter Watson, Ideas: A History from Fire to Freud, Weidenfeld & Nicolson (London 2005)

J. W. Yolton, John Locke and the Way of Ideas (Oxford 1956)

Consciousness and Intentionality  – artikel di Stanford Encyclopedia of Philosophy .

Afrizatul, Contoh Gagasan Pokok  (Pekanbaru 2020)

Da intencionalidade da consciência ao método progressivo regressivo em Husserl  From intentional consciousness to progressive regressive method in Husserl) – artikel di SCIELO , Psicol. USP vol.26 no.1 São Paulo, January / April, 2015 (pt).

OS OLHOS DA IDEIA (THE EYES OF IDEA  – volume ketiga dan terakhir dari “The Line of Sight”; esai ini memproyeksikan prinsip dari dua volume sebelumnya tentang teori film, membatasi dirinya kepada penglihatan dan bahasa, membuka perspektif pada konsep utama mengenai gagasan, dari Plato dan Aristoteles – Esai oleh Ricardo Costa, April 2002 (pt).