Santrock, John W., author
McGraw-Hill, 2016
Buku Teks
Fleming, C.M., author
Routledge and Kegan Paul, 1955
Buku Teks
Garrison, Karl C., author
Prentice-Hall, 1975
Buku Teks
Cole, Luella, author
Holt, Rinehart and Winston, 1963
Buku Teks
Santrock, John W., author
McGraw-Hill Education, 2019
Buku Teks