Berg, Joel H., author
Wiley Blackwell, 2009
Buku Teks
Dickins, Mary, author
MGraw Hill, Open University Press, 2014
Buku Teks
edited by Karen Menke Paciorek, Joyce Huth Munro
McGraw-Hill, 2002
Buku Teks
Jack P. Shonkoff and Samuel J. Meisels, editors
Cambridge University Press, 2000
Buku Teks
Brewer, Jo Ann.
Boston , 1992
Buku Teks