Cita APA (7a ed.)

(1981). Opening doors for preschool children and their parents (2nd ed.). American Library Association.

Cita Chicago Style (17a ed.)

Opening Doors for Preschool Children and Their Parents. 2nd ed. Chicago: American Library Association, 1981.

Cita MLA (9a ed.)

Opening Doors for Preschool Children and Their Parents. 2nd ed. American Library Association, 1981.