APA (7th ed.) Zitazioa

Sigel, I. E. (1999). Development of mental representation: Theories and applications. Lawrence Erlbaum Associates.

Chicago Style (17th ed.) Zitazioa

Sigel, Irving E. Development of Mental Representation: Theories and Applications. Mahwah: Lawrence Erlbaum Associates, 1999.

MLA (9th ed.) Zitazioa

Sigel, Irving E. Development of Mental Representation: Theories and Applications. Lawrence Erlbaum Associates, 1999.