Kroger, Jane, 1947-, author
Routledge, 2004
Buku Teks
Heaven, Patrick C. L., author
Palgrave, 2001
Buku Teks
edited by Lisa J. Crockett, Ann C. Crouter
Lawrence Erlbaum Associates, 1995
Buku Teks
edited by Ralph J. Diclemente, William B. Hansen, Lynn E. Ponton
Plenum Press, 1996
Buku Referensi
Papalia, Diane E., author
McGraw-Hill, 2002
Buku Teks