edited by Richard M. Lerner, Laurence Steinberg
John Wiley & Sons, 2004
Buku Teks
Jarvis, Matt, 1966-, author
Routledge, 2005
Buku Teks
Young, Kimball
Kegan Paul, Trench, Trubner, 1946
Buku Teks
Eysenck, Michael W., author
Psychology Press, 2005
Buku Teks
editor, James E. Birren and K. Warner Schaie
Academic Press, 1990
Buku Referensi