Bono, Edward de, author
Kaifa, 2007
Buku Teks
Reid, S.P., author
Bhuana Ilmu Populer, 2004
Buku Teks
Bono, Edward de, author
Erlangga, 1988
Buku Teks
Maryam Rudyanto, author
Fakultas Psikologi Universitas Indonesia, 1989
UI - Tesis (Membership)
Titis Endarwidiarti, author
Fakultas Psikologi Universitas Indonesia, 2004
UI - Skripsi (Membership)