APA
Guralnick M. J. &. B. F. C., . (1987). The effectiveness of early intervention for at-risk and handicapped children. Academic, Orlando: .
Chicago
Guralnick Michael J & Bennett Forrest C, . 1987. The effectiveness of early intervention for at-risk and handicapped children. Academic, Orlando: .
Harvard
Guralnick M. J. &. B. F. C., . (1987). The effectiveness of early intervention for at-risk and handicapped children. Academic, Orlando: .
MLA
Guralnick Michael J & Bennett Forrest C, . The effectiveness of early intervention for at-risk and handicapped children. Academic, Orlando: . 1987.