Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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