APA (7th ed.) Citation

Penn, H. (2011). Quality in early childhood services: An international perspective. Open Univ. Press.

Chicago Style (17th ed.) Citation

Penn, Helen. Quality in Early Childhood Services: An International Perspective. Maidenhead [u.a.]: Open Univ. Press, 2011.

MLA (9th ed.) Citation

Penn, Helen. Quality in Early Childhood Services: An International Perspective. Open Univ. Press, 2011.