Castro, Daniel R., author
Gramedia, 2004
Buku Teks
Gigih Trisayekti H.D., author
Fakultas Psikologi Universitas Indonesia, 1993
UI - Skripsi Membership
Pokras, Sandy, author
Binarupa Aksara, 1993
Buku Teks
Boy Subirosa Sabarguna, author
UI-Press, 2006
Buku Referensi
Kepner, Charles Higgins, 1922-, author
McGraw-Hill, 1965.
Buku Teks