Cita APA (7th ed.)
Richardson, K. (1998). Models of cognitive development. Psychology Press.
Cita Chicago (17th ed.)
Richardson, Ken. Models of Cognitive Development. Hove, East Sussex, UK: Psychology Press, 1998.
Cita MLA (9th ed.)
Richardson, Ken. Models of Cognitive Development. Psychology Press, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.