APA

Hoffman J., Boyer R., . (2002). Preschool Scholar. USA: School Zone.

Chicago

Hoffman Joan, Boyer Robin, . 2002. Preschool Scholar. USA: School Zone.

Harvard

Hoffman J., Boyer R., . (2002). Preschool Scholar. USA: School Zone.

MLA

Hoffman Joan, Boyer Robin, . Preschool Scholar. USA: School Zone. 2002.