APA
Butter D., . (1995). Babies need books 3rd ed. Penguin, New York: .
Chicago
Butter Dorothy, . 1995. Babies need books 3rd ed. Penguin, New York: .
Harvard
Butter D., . (1995). Babies need books 3rd ed. Penguin, New York: .
MLA
Butter Dorothy, . Babies need books 3rd ed. Penguin, New York: . 1995.