Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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