Santrock, John W.
McGraw-Hill Education, 2019
Buku Teks SO
Fleming, C.M.
Routledge and Kegan Paul, 1955
Buku Teks
Santrock, John W.
University of Texas, 1990
Buku Teks SO
Steinberg, Laurence
McGraw-Hill, 1999
Buku Teks SO
Steinberg, Laurence
[publisher not identified], 1993
Buku Teks SO